SPANX Basix Full Coverage Swim Bottom (1312) Inner and outer fabrics are scientifically coordinated for maximum compression that targets and flattens the tummy. Flattering full-coverage bottom. Curved, at-the-waist cut conceals the tummy. High-waist styling hits at belly button. Legs designed to offer a bulge-free look. Specially cut pattern prevents legs from riding. Full-coverage seat stays in place. Made of luxuriously soft, super-premium jersey fabric. Designed to ensure a customized fit by size. Lined front and back panels.