Size & fit
Close. Supportive. Still able to breathe.
Undease is a fitted trunk: smooth under trousers, secure through the front and cut to stay put. Start with your usual premium-underwear size.
01
Measure where it sits.
Wrap a tape around the place your underwear waistband naturally rests. Keep it level and comfortably close—not aspirationally tight.
02
Choose your usual fit.
Stay true to size for the intended close fit. Size up if you prefer more room through the waistband and leg.
03
Between sizes?
Choose the smaller size for a closer fit, or the larger size for a little more ease through the waistband and leg.

The Undease fit
Support without the squeeze.
- Soft waistband designed to sit level without folding.
- Close leg that stays smooth beneath trousers.
- Shaped front and low-profile seams.
- Available from XS–3XL.