SPANX HourGlass Racerback One Piece Swimsuit (2624) Shell: 70% nylon, 30% Lycra. Lining: 91% polyester, 9% Lycra. Wireless, sewn-in light contour pads for shape and modesty. Outer cup has angled, covered seaming that continues down front sides. Princess seaming visually slims the torso. Covered elastic horizontal bands under bust for stability. Bond-voyage fused, flexible control lining flattens the tummy and sculpts the middle. Back is lined with powermesh for smoothing. Racerback provides plenty of room for shoulder movement. Lined, stretch straps have covered elastic at edges. UPF 50+ offers a high level of sun protection. Sunscreen and chlorine resistant for long wear. One-piece swimsuit provides full rear coverage. Style 2690 is solid colors and 2624 for Thin Stripe.