The science-backed device that lifts your sunken chest at home, no scalpel, no metal bar, no $50,000. 3D-printed to fit only your chest.
Joined by 1,000+ people fixing their chest without surgery, since 2015
Wrong size, wrong seal, wrong hours, and the same device does nothing.
Six questions. If you're nodding at most of them, you're on the right page.
You don't need to be cut open.
You need the right pull.
Peer-reviewed studies spanning 30+ years show the vacuum bell lifts the sternum, and with daily use, the lift holds. The variable is the right device and the right plan.
A clear, 3D-printed dome that seals to your chest and lifts the sternum with nothing but negative pressure. Drag it to inspect the exact device that ships to you.
One physical law, applied for 30+ years: bone and cartilage remodel under directed, sustained load (Wolff's Law). The bell supplies that load, without a scalpel.
Every gram of lift depends on the airtight seal. Your bell is 3D-printed taller and oval, shaped to your depression, so the suction lands exactly on the area that needs to move, with no leaks, no nipple overlap, and no wasted pressure. It's also why generic round bells fail: they seal on almost nobody.
Pump until you feel firm tension, lock the clip, and the dip visibly rises through the clear window. At first the lift lasts a few hours after each session, that in-session elevation is the raw material of correction.
Under repeated, directed load, cartilage and bone remodel. Session after session the lift holds longer, until it stops springing back, one analysis found over 1 cm of permanent lift after three months of daily use, and 50–70% of compliant users show measurable sternal elevation.
The variable that decides your result isn't age. It's hours.
Wear time of 28+ hours a week is the single strongest predictor of correction, full citations in the evidence section below.
Four steps. A few minutes to learn, and the routine is yours for good.
Place the bell over your sunken chest and press down with both hands until it seals on its own.
Pump slowly until you feel strong tension, never pain. Your chest rises, often for the first time.
Tighten the air clip and disconnect the pump. Start at 10 minutes, then build to 2+ hours a day.
Loosen the clip, press the release, lift the bell off. Your chest sits visibly higher.
Real people, real chests, real lifts. Every photo below is a before and after from vacuum bell use, no surgery involved.
Photos can be doubted. CT scans can't. Here's the sternum lifting on medical imaging.
If you're still wondering if it really works, you're not alone. But, the answer is clear. Scientific studies and real-world results say both yes, and the benefits are plenty.
In a case study by Eckart Klobe, inventor of the vacuum bell, a 61-year-old man with a 4 cm chest dent successfully improved his pectus using the vacuum bell.
The study was published in Orthopadie Technik (OT), the leading orthopedic journal in Germany, Austria and Switzerland, regularly read by 87% of professionals.
He used a 26 cm vacuum bell for 3-4 hours daily, split into 2-3 sessions. Over time, both short-term and long-term improvements were clearly seen.
Not my opinion, the published record. Each card below is a peer-reviewed study on vacuum bell therapy, with its key findings.
Read them by rating, or by what people actually got out of it - the transformations, the honest reviews, and the messages that land in my inbox every week.
across 12 rated statements
500+ reviews collected since 2015. Open a bar, a tag or a condition to read the published ones.
What the 4.9 is made of
17 published statements · 500+ collected since 2015
read the blog for months before i actually did anything with it. no coach, no brace, just the stuff in the articles done properly. i feel a lot better now and the photos say the rest
DaniloPE
Read the blogCroatia 🇭🇷
Two months in and I've put on 3 kg of muscle. My chest doesn't cave the way it used to when I'm standing relaxed, and that alone was worth it.
MiloPE25
1-on-1 CoachingGermany 🇩🇪
the bell leaves a red ring on your chest the second you take it off, and nobody warns you about that. it fades within the hour and the skin has never been an issue since. 100% satisfied - the sternum sits higher than it has my whole life
PiotrPE25
Vacuum BellPoland 🇵🇱
He knows more about this than the two consultants I paid to see, which says more about them than it does about him. Showed my GP the 9 month photos and he asked me for the website. Half a star off because the time zones make the calls a nightmare from Ireland.
RuairíPE29
1-on-1 CoachingIreland 🇮🇪
watched the youtube for six years before i spent a single cent. bought the program, did it properly for 7 months, and the only thing i actually regret is the six years
TanePE26
PE Exercise ProgramNew Zealand 🇳🇿
Had the flare since i was about 14 and just assumed that was my ribcage, permanently. Brace plus the breathing drills and my mrs asked when i'd lost weight. I hadn't lost anything, it's just the ribs sitting where they should now.
DanielRib Flare27
Rib Flare BraceUK 🇬🇧
first call he told me straight up itd take a year and id hate months 2 through 5. he was right about both lol. 12 months on and my PC is flat. took my shirt off at the beach in january without doing the whole towel thing
DimiPC19
1-on-1 CoachingAustralia 🇦🇺
didnt know you could be breathing wrong for 21 years. thats the whole thing right there. flare started going down on its own once i stopped breathing into my shoulders, which is not what i paid for but ill take it
benjiRib Flare21
Rib Flare CourseUSA 🇺🇸
the brace is made really good, i wear it under the t-shirt at school and nobody has noticed in 4 months. my mother was crying when we compare the photos. sorry for my english
NicoPC17
Pectus Carinatum BraceItaly 🇮🇹
ive bought like four programs for this over the years and quit every one of them by week two. finished this one. i think its cus you cant move on until you can actually hold the position, so theres never that thing where you're guessing if youre ready or not
MateoRib Flare23
Rib Flare CourseUSA 🇺🇸
My son is 15 and had started keeping a shirt on in the pool, which is how I worked out something was wrong in the first place, because he certainly wasn't going to tell me. He would never have stuck with the brace on his own. It was the fortnightly check-ins that did it - he didn't want to turn up with nothing to report. Six months now and the ridge has visibly come down. He swims without the shirt.
Noah's mumPC
Pectus Carinatum BraceUSA 🇺🇸
I went in wanting to debunk it, honestly. Started opening the citations one at a time and they were real papers that said what he said they said. That is a depressingly low bar and nowhere else online clears it.
SanderRib Flare34
Read the blogNetherlands 🇳🇱
every doctor said come back when youre done growing, which is a mad thing to say to a 17 year old whos already miserable about it. did four months of training instead. 4kg on and my t shirts actually sit on something now
JakePE17
USA 🇺🇸
1 cm off the depth in eight months. I had this filed under things about my body that got decided before I was born, and I'd stopped thinking about it somewhere in my twenties, so being wrong about it has been a strange few months honestly.
VincentPE + Rib Flare36
France 🇫🇷
i was the skinny kid who kept his top on at the beach every single year. 6 months, 5kg heavier. took it off in ibiza this summer and genuinely forgot to be weird about it until we were leaving
CallumPE17
UK 🇬🇧
bump is 0.5cm down in 5 months. bro i genuinely thought this was gonna be bench press for a year, its like 80% breathing drills and posture stuff. wasnt what i signed up for but i cant argue with the tape measure
EliasPC16
Norway 🇳🇴
i did abs for two years thinking that was the fix. it was never going to be abs. three months of the brace plus actually learning how to exhale properly and its 1.5cm narrower down there
AlexRib Flare22
USA 🇺🇸
"read the blog for months before i actually did anything with it. no coach, no brace, just the stuff in the articles done properly. i feel a lot better now and the photos say the rest"
"Two months in and I've put on 3 kg of muscle. My chest doesn't cave the way it used to when I'm standing relaxed, and that alone was worth it."
"the bell leaves a red ring on your chest the second you take it off, and nobody warns you about that. it fades within the hour and the skin has never been an issue since. 100% satisfied - the sternum sits higher than it has my whole life"
"He knows more about this than the two consultants I paid to see, which says more about them than it does about him. Showed my GP the 9 month photos and he asked me for the website. Half a star off because the time zones make the calls a nightmare from Ireland."
"watched the youtube for six years before i spent a single cent. bought the program, did it properly for 7 months, and the only thing i actually regret is the six years"
"Had the flare since i was about 14 and just assumed that was my ribcage, permanently. Brace plus the breathing drills and my mrs asked when i'd lost weight. I hadn't lost anything, it's just the ribs sitting where they should now."
"first call he told me straight up itd take a year and id hate months 2 through 5. he was right about both lol. 12 months on and my PC is flat. took my shirt off at the beach in january without doing the whole towel thing"
"didnt know you could be breathing wrong for 21 years. thats the whole thing right there. flare started going down on its own once i stopped breathing into my shoulders, which is not what i paid for but ill take it"
"the brace is made really good, i wear it under the t-shirt at school and nobody has noticed in 4 months. my mother was crying when we compare the photos. sorry for my english"
"ive bought like four programs for this over the years and quit every one of them by week two. finished this one. i think its cus you cant move on until you can actually hold the position, so theres never that thing where you're guessing if youre ready or not"
"My son is 15 and had started keeping a shirt on in the pool, which is how I worked out something was wrong in the first place, because he certainly wasn't going to tell me. He would never have stuck with the brace on his own. It was the fortnightly check-ins that did it - he didn't want to turn up with nothing to report. Six months now and the ridge has visibly come down. He swims without the shirt."
"I went in wanting to debunk it, honestly. Started opening the citations one at a time and they were real papers that said what he said they said. That is a depressingly low bar and nowhere else online clears it."
read the blog for months before i actually did anything with it. no coach, no brace, just the stuff in the articles done properly. i feel a lot better now and the photos say the rest
Shared with each client's permission.
Did I help you with your pectus?
Share your before & after
Before
After
Before
After
“I'm 32. Everything I ever read said the window on this shuts at 18 and after that you either get cut open or you live with it. Nine months, 5 kg on, 1 cm off the depth. Nobody is more annoyed about the wasted decade than me.”
Before
After
“came in skinny with a deep dip and ribs that stuck out at the bottom. six months, 4kg up. funny thing is nobody says anything about the dip, its the flare going down that people actually noticed”
Before
After
“I'm 52. I have both a ridge and a dip, which I'm told is unusual, and I've had the pair of them since I was a boy. Nine kilos off in five months and for the first time my chest looks like one chest. I did not expect to be sorting this out at my age, but there we are.”
Before
After
“The brace did the flare, the training did the rest. Seven months, 6 kg on, 1 cm off the depth. The part I wasn't ready for is that I now own shirts that fit, after about fifteen years of buying everything one size too big.”
Before
After“5 months, 4kg on. still there if i go looking for it. nobody else has said a word”
Before
After“read the blog for months before i actually did anything with it. no coach, no brace, just the stuff in the articles done properly. i feel a lot better now and the photos say the rest”
Before
After“the bell leaves a red ring on your chest the second you take it off, and nobody warns you about that. it fades within the hour and the skin has never been an issue since. 100% satisfied - the sternum sits higher than it has my whole life”
Before
After
“3 months and 5kg later the ridge is sitting lower than its ever been. i was 100% convinced surgery was the only option, like id already looked up how much it costs and everything”
Before
After
“9 kilos in 6 months. the trick nobody tells you is you build the muscle around the ridge, then the ridge is not the first thing people see. before this i am buying only loose shirts, maybe 8 years like this”
Before
After
“before, the carinatum is the first thing i see in every photo of me. now i show someone and they must ask me where it is. i did not have any surgery, only the training”
Before
After
“Four months in and the side profile is the thing that changed. I used to clock myself in every shop window I walked past, at 30 years old, and I hadn't even noticed I was doing it until I stopped.”
PE pectus excavatum · PC pectus carinatum · RF rib flare
Drag each slider to compare.Tap any case to open and compare.Published only with the client's written consent.
Medically reviewed byProf. Dr. Mustafa Yüksel
Tap any message to read it full size. Instagram, Facebook, YouTube & TikTok comments, DMs, WhatsApp and email - real messages from real clients. Names and handles blurred, content untouched.
Case 01Case 02Case 03Case 04Case 05The four that come up most, answered the same way I would answer them on a call.
Take the 60-second quizPosture and breathing shift inside the first few weeks. Visible chest change is slower - in the case log above, Milo hit his at 2 months, Ian at 6. The programs run 16 weeks because that is how long it takes to show in the mirror.
Almost certainly not. The clients on this page were 22 to 32 when they started. Cartilage stiffens with age, so progress is slower, but slower is not stopped. Age changes the timeline, not whether it is worth doing.
Either works. Every program ships with a gym track and a no-equipment track for the same 16 weeks, and you can switch between them mid-program without losing your place.
No, and that matters. A sunken chest and a protruding chest need close to opposite work, and rib flare rides along with both. There is a separate program for each, if you are not sure which you have, the 60-second quiz sorts it out.
Other brands sell 3 or 4 generic sizes and a thin leaflet. Get the size wrong and you get nipple pain, air leaks and regret. Every bell I make is built for one chest: yours.
A taller, oval-shaped bell 3D-printed to target only your sunken area, nothing wasted. Stronger, more focused lift, a better airtight seal, no nipple irritation, and it handles asymmetric pectus.
A solid, one-piece 3D-printed body. No glued parts that fail, no fragile glass that shatters when dropped. It survives real life so your routine never stops.
Watch every millimetre of lift happen in real time through a glass-like window that's stronger than glass. Won't crack, fog or yellow, stays clear for years, not weeks.
FDA-certified, medical-grade, hypoallergenic silicone, the same family used in medical equipment. Zero itch, molds to your shape, holds up under vacuum pressure, hour after hour.
The professional-grade hand pump comes in the box from day one. No upsells, no hidden costs, and a backup pump too, because if the pump dies, your whole routine stops.
I'm not writing this as a doctor looking at a scan. I had the sunken chest, the flared ribs, the shirt that stayed on at the pool, and nobody could tell me what actually works.
Years of consistent, non-surgical training made mine unnoticeable. Everything on this page exists because I needed it to exist ten years ago.
I tested all of it on my own body first, then refined it every time someone hit a wall I had not planned for.
Featured in Healthline · Level 5 DUKE Institute Certified Personal Trainer (ISSA) · Specialised in pectus excavatum, carinatum and rib flare.
Medically reviewed
I don't publish a clinical claim until Prof. Dr. Mustafa Yüksel, MD has checked it
Thoracic surgeon, founder of the Chest Wall International Group
There are no generic sizes here. You take one measurement, send it to me, and I 3D-print a bell to your exact chest. Two minutes of work for a fit no marketplace bell can match.
Unsure between two sizes? Go larger, a larger bell captures more of the chest wall, which matters most for deeper and asymmetric depressions. Message me your measurement and I’ll confirm before I print.
A vacuum bell is a correction tool, not a medical override. If a doctor has flagged a cardiac or severe structural concern, clear it with them first.
No consultations to book, no waiting list, no size chart to gamble on.
Every bell is 3D-printed to your measurements and ships worldwide with tracking, with the pump, a spare pump, the ice pack and the 90-day plan included. No upsells at checkout, ever.
Try the whole thing for 30 days. Use it, and if it isn't what was described, message me for a full refund, no questions asked. The risk stays with me, not you.
It works. Peer-reviewed studies over 30+ years show the vacuum bell lifts the sternum; one analysis found permanent lift over 1cm after three months of daily use, and others report 50–70% success in compliant users. The Nuss operation (the surgery that slides a metal bar behind the ribs to push the chest out) is effective, but research increasingly treats the vacuum bell as a real, comparable alternative, especially with a proper fit and a consistent protocol.
Yes. Adults in their 30s, 40s, 50s and even 60s have achieved great results. Teens respond faster because their cartilage is softer, but age is never the dealbreaker, consistency is. The 90-day plan adapts the progression to age.
Mild cases often see change within 1–6 months; deeper cases can take up to a year. At first the lift lasts a few hours after a session; with consistent daily use it starts to hold. Depth of the dent and daily consistency are the two biggest factors.
Start gentle: about 10 minutes twice a day. Build up to a minimum of 2 hours daily, roughly an hour in the morning and an hour in the evening. Advanced users wear it overnight for 6–8 hours. The plan walks you through the exact build-up so you never overdo it.
It shouldn't hurt. A slight tightness or pulling is the suction working. Sharp pain means you're pumping too hard, ease off. Light redness and a ring mark are normal; bruising or deep red patches mean the suction is too strong or the session too long, so reduce intensity and take a day off.
Yes. Because your bell is 3D-printed to your measurement, it can be shaped and positioned for off-centre and asymmetric depressions. As long as you get a good seal and a visible lift, you’re using it correctly. Tell me about your chest when you send your measurement.
There’s no lower age limit for the device itself, a 2022 study in Frontiers in Pediatrics found it safe and effective even for young children, who respond faster thanks to more flexible cartilage. For kids, involve your paediatrician and use the gentlest settings.
Because the entire mechanism depends on the seal. A bell that doesn't match your chest contour leaks suction, needs over-pumping to hold, and bruises the edges while under-treating the dip. One built to your measurements seals at comfortable pressure, which is what makes daily consistency, and therefore results, actually possible.
The guided measuring process takes about five minutes with a tape measure and the instructions I send you. Every measurement is checked personally before your bell is built, if something looks off, I contact you and we sort it before anything is made.
You get the full 90-day protocol with it, session build-up, suction guidance, and what to expect phase by phase. The bell is the tool; the plan is what makes it work. And if you want the deep-dive on technique, the Vacuum Bell Mastery Guide pairs with it.
Yes, they compound. Training expands and strengthens the chest the bell is lifting; most people schedule sessions around workouts (the plan shows how). The PE course covers the full pairing if you want the complete system.
Deeper dips take longer and progress in smaller steps, that's the honest answer. The custom fit matters most in exactly these cases, because a standard bell often can't seal on a deep or asymmetric dip at all. Tell me about your chest when you order and I'll give you a straight read on expectations.
Worldwide, tracked. It ships 5–7 days after your measurements are confirmed, and you get the tracking number as soon as it leaves.
You send your measurements, the guided process takes about five minutes, then your bell is built to them and ships in 5–7 days with tracking. If a measurement looks off, I contact you personally before building.
You’re covered by a 30-day, no-questions-asked, 100% money-back guarantee. If the device isn’t right for your anatomy or you don’t feel you’ve received great value, message me within 30 days and I’ll refund you in full. You don’t need the box and it doesn’t matter that you’ve used it - a bell you haven’t worn tells you nothing. You cover tracked return postage; I refund everything you paid, shipping included. The fit, the kit and the plan exist precisely so it doesn’t come to that.
Take the free 1-minute assessment and get a straight answer for your condition and severity.
Take the assessment →The chat bubble in the corner reaches me directly, ask anything about your case before you decide.
Try the whole thing. If it isn't right for your chest, every dollar comes back.
Start risk-free →A vacuum bell built to your chest, the full kit, and the 90-day plan that tells you exactly what to do, for less than one night in a hospital. Skip the scalpel. Start lifting your chest this week.
Get my custom fit
P.S. If you've read this far, part of you has already decided. The only thing you can lose by trying is the version of next year where nothing changed. - Mihail
