Here's a quiet truth about posture correctors: most of the ones abandoned in drawers weren't bad products — they were the wrong size, or fitted the wrong way. A corrector that pinches under the arms, rides up, or squeezes too tight won't get worn, and a corrector that isn't worn can't help. Getting the size and fit right is the single biggest thing you can do to make sure yours becomes a daily companion instead of a drawer ornament. Here's a simple, complete guide.
Step 1: Measure yourself the right way
Most posture correctors, including ours, are sized by chest circumference — the distance around your chest at its widest point, usually just under the armpits and across the shoulder blades.
- Use a soft tape measure over thin clothing or bare skin.
- Stand relaxed — don't puff your chest out or hold your breath.
- Keep the tape level all the way around, snug but not compressing.
If you don't have a soft tape measure, wrap a string around your chest, mark where it meets, and measure the string against a ruler. Ask someone to help if reaching around is difficult — an accurate number matters more than doing it solo.
Step 2: Pick your size — and what to do if you're between sizes
Compare your measurement to the product's size chart. The my-curve Posture Corrector runs from S to XXXL, so nearly every body type is covered — something worth checking on any corrector you consider, as many brands stop at XL.
If you land between two sizes, a good rule of thumb: choose the larger size if you value comfort for long wear (most people do), and the smaller only if you prefer a firmer, more noticeable cue. A slightly roomy corrector can be adjusted tighter; an undersized one has nowhere to go.
Step 3: Put it on correctly
Fit is half sizing, half technique. The sequence that works:
- Slip your arms through the loops as you would a backpack.
- Stand tall first — shoulders gently back and down — then snug the straps. Never tighten into a slouched position; the corrector should hold the posture you set, not create it by force.
- Adjust until you feel light, even contact across the upper back, with no digging at the underarms.
A well-fitted corrector should feel like a reminder, not a restraint — a gentle hand on your shoulders, not a harness.
The comfort checklist: how to know the fit is right
Once it's on, run through this quick check:
- Two-finger test: you should be able to slide two fingers under each strap.
- No underarm pinching — the most common sign of too small or over-tightened straps.
- Full, easy breaths — you can breathe deeply without resistance.
- Free arm movement — you can reach forward and overhead comfortably.
- Gentle cue when slouching — round your shoulders on purpose; you should feel light tension reminding you to reset.
- No skin marks beyond faint temporary lines after wearing.
If it fails the checklist, loosen the straps before blaming the size. If it fails even fully loosened, size up.
Comfort for all-day confidence
A few habits keep the corrector comfortable for the long haul:
- Start small. Wear it 15–30 minutes at first and add time gradually. Muscles need a chance to adapt.
- Wear it over a thin layer — a t-shirt or camisole — if your skin is sensitive.
- Re-check the fit weekly. As standing taller starts to feel more natural, many people find they can loosen the straps slightly — a nice sign of progress.
- Keep it fresh. A gentle hand wash now and then keeps the fabric soft and breathable (we've covered washing in detail in an earlier guide).
Why we designed for easy fitting
Many of our customers are in their 60s and 70s, often fitting the corrector without help. That shaped the design: soft, breathable fabric instead of rigid panels, simple front-adjust straps you can manage on your own, and a slim profile that disappears under a shirt or blouse. It's rated 4.8/5 by more than 2,000 customers — and if the size you choose isn't right, the 30-day money-back guarantee means you can exchange or return it without fuss.
The bottom line
Measure your chest properly, size up when in doubt, tighten into a tall posture rather than a slouch, and pass the two-finger test. Ten careful minutes on day one is the difference between a posture corrector that quietly supports you for months and one that never leaves the drawer. Your shoulders — and your future self — will be glad you took the time.
This article is for general information only and isn't medical advice. If you have a spine condition, recent injury, or skin condition affecting strap wear, check with a healthcare professional before use.