The Phelps High Waisted Matrix Jammer has been engineered and designed with the sole purpose of winning! The stretch allows maximum muscle flexibility where it combines 2 types of fabrics, for compression and freedom of movement. Reduced drag results in faster swim times. A careful blend and placement of various compression and stretch materials mean you're able to move where you need to, and you get explosive power from key muscle groups. Key Features Water repellent Jacquard Material – 4-way stretch allows for maximum muscle flexibility Exo-Core Technology – Combines two kinds of fabrics for compression and freedom of movement Sustaining Tape System – Improved body position with more horizontal buoyancy utilizing front and back axis tape, cross-coordinating to improve length and position of your body Material: 53% Polyamide, 33% Elastane, 13% Polyester and 1% Metal FINA APPROVED