High Gauge technology so water molecules cannot penetrate through fabric, keeping you lighter and slicker through the water. Heat pressed with Silicon coating for water resistance allowing lowest drag coefficient on the planet. 40 denier Lycra yarn for better muscle holding ability, less muscle vibration contributing to reduced fatigue and better recovery. Chlorine resistance Lycra prime yarn to help preserve your fabric. Our Polyester yarn is selected for its hydrophobic properties (significantly less water retention than nylon). Heat pressed for flattened, smoother surface texture. This benefits the athlete with less surface friction drag. Hydrophobic Polyester yarn so less water absorption.