The smooth look you love in One Smooth U® bras in a breathable lightweight design. Soft inner sling for added support and shaping. Sheer illusion neckline is ultra smooth. Convertible straps for versatility. Natural shaping without the extra bulk. Two-ply back for added back smoothing. The One Smooth U® collection lies flat under your clothes with no bra lines. Back-adjustable straps for custom fit. Comfort-U® design for stay-in-place straps.