The sporty & stylish Womens Speedo Endurance 10 Boom Allover Muscleback Swimsuit is perfect for swim training sessions with its super comfortable, stretchy & ultra quick-drying Endurance 10 fabric. Features Medium leg Muscleback design for flexibility & freedom of movement Fully lined Endurance 10 Fabric (80% Polyamide/20% High Clo TM Elastane) Gives 10 x chlorine resistance of normal Lycra Great stretch to give superior fit, comfort & freedom of movement Good shape retention Snag resistant UV protection