FormaChest Vacuum Bell
FormaChest Vacuum Bell
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- 90-day money-back guaranteesee terms
- Free Worldwide ShippingIncluded with every order.
- Free guidance and support from TomasA plan for your case and a check-in every two to three weeks.
- The free guideYours by email the moment you finish the quiz, and printed in the box with your bell.
Product Description
Select a size to view the product description.
Correct a sunken chest at home, without surgery
FormaChest is a vacuum bell for pectus excavatum. It seals over the dent, and the suction lifts the breastbone into position in one session. The brace holds it there between sessions, and with every day of that, the cartilage learns the new position. That is the whole method, and you run it at home.
Why people choose it over surgery
The Nuss procedure costs $40,000 to $80,000, keeps a metal bar inside the chest for 2 to 3 years and takes a second operation to remove it. FormaChest is a one-time purchase with no hospital, no anesthesia and no incisions.
Twenty years of research behind it
Developed by Dr. Eckart Klobe in 2005, with twenty years of clinical use since. About 80% of studied patients improved significantly in the Basel cohort of about 140 patients. In 240 children whose chests still moved, the average dent shrank by nearly two-thirds, from 0.83 to 0.30 inches (AlShammari et al., J Thorac Cardiovasc Surg). It is offered at major children's hospitals, including Cincinnati Children's.
Why people stop, and how you keep going
In the research only 5% failed, while 34% simply stopped a few weeks in when the routine got old. Consistency decides it. Structured support lifted adherence from 58% to 83% (Haje et al. 2021, 115 patients), so every FormaChest comes with a plan for your case and a check-in every two to three weeks. Tomas answers every time.
Engineered for full suction
The bell holds up to 30 kPa (300 mbar), the high suction the method runs on. The medical-grade silicone rim seals on skin, the clear window lets you watch the chest rise, and the hand pump has a one-way valve and a flow clamp, so you set the pressure every session.
The routine, printed
The FormaChest guide comes printed in the box, with the full routine the founder used, step by step. The same guide arrives by email the moment you finish the quiz.
Risk-free to try
90-day money-back guarantee, see the terms. Your correction starts the day it arrives.
This is not a diagnosis. Deep, rigid dents and any breathing or heart symptoms need a doctor first. Under 18, a parent decides.
Product Specifications
Select a size to view product specifications.
What arrives in the box
- The vacuum bell in your size.
- The hand pump and hose, packed separately.
- The FormaChest guide, printed, with the full routine step by step.
The brace and the gel travel in the same parcel when you add them.
Sizes
The bell is sized to the dent, not to your height. The rim lands on firm chest wall just outside the dent and never crosses a nipple. Between two sizes, go larger.
Men's
| Size | Outer diameter | Fits a dent up to |
|---|---|---|
| XXS | 4.7 in (12 cm) | 4.3 in (11 cm) |
| XS | 5.1 in (13 cm) | 4.7 in (12 cm) |
| S | 5.5 in (14 cm) | 5.1 in (13 cm) |
| M | 6.1 in (15.5 cm) | 5.7 in (14.5 cm) |
| L | 6.8 in (17.2 cm) | 6.4 in (16.2 cm) |
| XL | 7.5 in (19 cm) | 7.1 in (18 cm) |
Women's
| Size | Width between the breasts |
|---|---|
| S | 5.3 in (13.5 cm) |
| M | 5.9 in (15 cm) |
| L | 6.5 in (16.5 cm) |
A dent wider than 7.1 in (18 cm) gets a custom-fitted bell. Email support@formachest.com.
Not sure? The 60-second quiz assigns your size from your own measurement, and a person checks it before the bell ships.

Questions people ask before they buy.
How long until it arrives?
2 to 3 weeks from order to door, because each bell is made to order. Tracking is emailed when it ships. Import charges are prepaid to the US, EU, UK, Middle East and Southeast Asia.
How do I pick a size?
The 60-second quiz assigns your size from your own measurement, and a person checks it before the bell ships. Between two sizes, go larger.
Does it hurt?
Expect firm pressure, not pain, and temporary marks in the first weeks. Stop signals, every time: pain that stays after the bell comes off, skin that breaks rather than marks, or fluid pockets; pause use and see a doctor.
How long is a session?
Twice a day, morning and evening, at least 3 to 4 hours apart. Each session runs until the surface under the dome sits level, capped at 30 minutes.
How strong is the suction?
Up to 300 millibar (30 kPa), the pressure the method runs on. You control it with the hand pump and the valve the whole time.
Can a child or teenager use it?
Yes, with a parent running the sessions and at lower pressure. FormaChest does not sell to minors directly, so the order and every message go through a parent.
What if it does not work for me?
Every order is covered by a 90-day money-back guarantee, used bell accepted. Send it back within 90 days of delivery and we refund the price you paid; return postage is yours, details in the refund policy.
Order-verified reviews appear here as customers finish their first months.