The Firerock Splice Jammer is engineered for speed. Showcasing 100% polyester Durafast™ construction the SFRC7 Firerock Jammer is 100% chlorine proof for 72 hours of exposure. Designed for competition at every level, this men's swimsuit lasts 20 times longer than traditional swimwear and provides 100% colorfastness and unsurpassed sun resistance. A perfect choice for team use, Durafast™ never fades and TYR 4-Way Stretch Technology never loses its stretch, so you never lose your edge.