BYS

StayPut™ Anti Roll-Down Seamless Shaper Short

$39.99

~~$79.99~~ $39.99

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BYS · Size Guide

Find Your Perfect Fit

All measurements below are body measurements. Take your time — the right fit makes all the difference.

A note from the atelier Our BYS pieces are designed to adapt and flatter every body shape. Wherever possible, straps are adjustable so you feel held in all the right places. If in doubt, size up and adjust.

Bust

Standing tall, measure loosely around the fullest part of your bust, keeping the tape parallel across your back.

Underbust

Around your ribcage, just under your bust. Tape snug and parallel across your back. Wear a non-padded bra for this one.

Waist

At the smallest part of your waist, measure loosely with the tape parallel to the floor.

Hips

At the fullest part of your hips and seat, keep the tape parallel all the way around your body.

Measuring for a bra: wear your best-fitting non-padded bra. General tip: use a soft tape, held straight without pulling tight, in thin underwear, and don't suck in. Still unsure? Try the “Find My Size” tab.

Product Type

Bust (cm)

Underbust (cm) The measurement just under your bust, around the ribcage

Bust (cm) Around the fullest part of your bust

Waist (cm)

Hips (cm)

💌 Not sure about your size? Our team is happy to help you find the perfect fit. Easy return or exchange if it doesn't work out.

Email Us Returns & Exchanges

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Fast Delivery

Tracked & shipped fast

Secure Pay

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Soft Feel

Buttery-soft fabric

Product details

The shaper short that never rolls down. StayPut™ combines ultra-soft comfy compression with an anti-slip grip waistband that stays exactly where you put it — all day, every wear. Smooths your tummy, slims your thighs, lifts your curves and vanishes under skirts, dresses and fitted pants.

Why you'll love it

No roll-down. Ever. Anti-slip grip technology built into the high waistband keeps it locked in place while you move.
Super comfy compression. Signature ultra-soft fabric flattens the mid-to-lower tummy without squeezing or digging.
Natural butt-lift effect. A ruched back seam rounds and lifts, no padding.
Smooths thighs & hides cellulite. High-coverage mid-thigh leg slims your silhouette and blurs texture under thin fabrics.
Zero chafing. The perfect layer under skirts and dresses to stop thigh rub.
Truly invisible. Seamless knit + laser-cut leg bands: no lines under bodycon dresses or fitted pants.

Fabric

50% elastane, 50% polyamide. Second-skin stretch, ultra light for all-day wear.

Size Guide

Size	Hips (cm)	Hips (in)	Pants Size
XS	88–92	34.5–36.5	0–2
S	93–97	37–38	4–6
M	98–102	38.5–40	8–10
L	103–107	40.5–42	10–12
XL	108–113	42.5–44.5	14–16
XXL	114–119	45–47	16–18

Between sizes? Size up for all-day comfort.

Care

Hand wash or machine wash on delicate (cold water, laundry bag). Lay flat to dry. No tumble drying or fabric softener.

Shipping & Returns

SHIPPING POLICY

We offer free standard shipping on all U.S. and Canada orders.
Please allow up to 3 business days for processing before your order ships.

RETURN POLICY

30-Day Returns (excluding clearance/final sale items).
Products must be returned unworn, unwashed, in their original condition, and with all tags and liners attached.
For hygiene reasons, we ask that you wear underwear when first trying on your purchase. We reserve the right to refuse returns that show any signs of wear.
International returns are accepted. Return shipping and any reverse duties are the responsibility of the customer.
We cannot accept returns (even within 30 days of purchase) for items listed as final sale at the time of purchase. The acceptance of any return is at the sole discretion of the BYS team.

Fit Recommendation

Measure your waist, bust, and hips to find your perfect BYS size. If your waist and hip measurements fall within different sizes, choose the larger size for the most comfortable fit.

Need help? Check our full Size Guide.

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