Waternity is the Arena fabric built to last. Its extraordinary robustness will resist the effects of chlorine and sunlight. In addition, its softness and easy-dry properties make it perfect for regular pool use The Arena? Master. One Piece is a simple, high-quality suit designed for younger swimmers. Appropriate for swim lessons, swim practice, competition, and more. Skinny straps. Light drop back. Fabric is comfortable for long periods of use. Chlorine resistant. Contrast stripes suit sides. High cut legs for full range of motion. Arena logo on left front hip. 53% Polyester / 47% PBT. Imported.