For a smooth look under clothing, choose One Smooth U® bras. Solve your side and back bulges and be assured of no show through. Smooth, seamless cups and back for a sleek look. Concealing petals for modesty and shaping. Flat, adjustable comfort shoulder straps Built-up Comfort-U® design for stay-in-place straps Full coverage Nylon/poly/spandex, imported Hand wash