SKIMS Weightless Demi Bra. Super lightweight, unlined. Size 36D Meet your lightest, most breathable demi bra. This innovative, ultra-airy silhouette has a comfortable and supportive underwire and breathable lined cups that feel like you have nothing on. Features fully adjustable straps, smoothing microfiber wings, SKIMS hardware logo on front wing, and hook and eye back closure. Fits true to size 84% nylon, 16% elastane