Silicone-Free special band on top of the cups prevents slipping Underwire design provide a perfect support Non padded cups with breathable fabric lining offer a natural busts shape Side boning and elastic side wings prevent shift and assure custom fit Optional straps adjust to multiple needs Triple support and anti-slip with no poke underwire, wide side boning and silicone-free strips. With optional straps, the bra can be cross-back, halter-neck to meet your different occasional needs.