These 2XU Endurance Aero Tri Short boast the compressive yet breathable properties of SBR COOL fabric. Coupled with 2XU’s revolutionary KINETIC SPEED fabric boasting dimpled airflow technology, optimal moisture management and speed through the air is also assured. A silicone elastic leg hem, adjustable waist drawstring and Italian long distance chamois combine to deliver an optimal fitting, long distance race short. Rear pockets for race essentials.