2XU Men's Tri Apparel Size Chart The Perform collection offers support for the rigors of Triathlon and is built for an all-round performance across short and long course racing. SBR Power and ICE X technologies provide cooling and UV blocking, while SENSOR MESH X zoned paneling promotes moisture management. Features: - CF and CB Panels - ICE X - Engineered from high filament cooling yarn, this impressive heat management fabric delivers unbeatable moisture wicking properties. Excellent stretch and recovery memory to move with the body. - Lower Body - SBR POWER - Built from 70D elastane, SBR POWER offers unmatched power, durability and strength. Featuring high denier nylon yarn for impressive support and moisture management, plus a mid level gauge for stability, impressive muscle stabilization through action is also assured. - Mesh Panels - SENSOR MESH X - Utilizing a nylon-LYCRA(R) fiber matrix with high filament hydrophilic nylon yarn and optimal airflow engineering, SENSOR MESH X represents the ultimate in moisture management. With LYCRA(R) fiber from INVISTA, unparalleled comfort is assured. - LD CHAMOIS - Quick drying long course triathlon chamois fused onto high density, hydrophobic foam base to manage moisture and deliver comfort to go the distance. Ample support for the bike while remaining discreet for the run.