This tech top is designed to help you swim faster in waters that are too warm for wetsuits. FEATURES: Made of Liftfoil3 hydrophobic fabric absorbs 66% less water than traditional fabric T-back and deep cut arm holes allow free swim rotation and prevents chafing 16-inch front zipper for easy ventilation, entry and exit Step-in design: Just zip down and step into it as you would a trisuit. Two Waterlid side pockets for zero drag in water, yet allows you to carry fuel on bike and run. USAT and WTC legal.