The Castelli Men's Free Triathlon Shorts host a plethora of water-smart, aero, ergonomic features. Hydrophobic Instadry Speed Fabric slips through water and wind with minimal moisture absorption. A Kiss Tri chamois provides lasting support on the bike while remaining virtually unnoticed during the swim and run--the chamois is tailored just right so no extra padding gets in the way. Plus, skin-nurturing Giro3 leg grippers and a drawcord waistband keep the shorts locked in streamlined place.