The Sleek Micro Smooth Plunging Strapless incorporates all of the attributes necessary in a supportive and comfortable strapless bra! Clean, molded cups shaped to create a gorgeous plunging neckline and provide just the right amount of lift along the bottom cup which both contain & amplify the bustline. The inner framework is composed of cushioned cut & sew foam, for a structured, yet incredibly comfortable fit. The wings are ultra clean & smooth 2 ply microfiber, with an additional power mesh interliner for complete support. Lightweight side boning is hidden at the inner liner, encased beneath plush elastics at both top & bottom edges for support that will not pinch or dig. Lastly, a strip of silicone runs across the facing elastics at the top back wing & bottom edge for no-slip support.