Coverage where we want it, and only where we want it. X-back and thin straps give us maximum mobility and cooling, while the built-in shelf eliminates bra guessing games. Layerable, next-to-skin fit. Best for up to B cups. Poly/elastane. By Patagonia. XS(0-2), S(4-6), M(8-10), L(12-14), XL(16).