SPANX Core High Rise Bottom Swimwear (1366) Covered elastic waistband features a salt-resistant silicone strip for stability. Comes to just under the bust line. Side seams are curved to whittle your middle. Covered elastic leg opening is ruched for extra ease. Full rear coverage for a flattering, modest fit. Shell 72% Nylon, 28% Spandex, Lining 80% Nylon, 20% Spandex,