2XU Aero Hex Short Sleeved Trisuit Made for Sprint and Olympic distance triathlons, the 2XU Aero Hex Short Sleeved Trisuit is engineered for smooth aerodynamics, excellent temperature regulation and features the exceptional fatigue-busting muscle support you'd expect from 2XU. Aerodynamic enhancements come by the way of the the SBR HEX fabric. This advanced material is deployed across the arms, shoulders and sides, working to improve airflow performance which leads to a reduction in drag. This drag saving not only saves vital energy but ensures you get more speed for your watts. A win-win. The Aero Hex triathlon suit also works hard to keep you cool. Across the upper body, the SBR SKIN ASKIN material wicks sweat away rapidly, leaving you feeling cool and fresh throughout your event. Underarm mesh gussets also enhance ventilation while also aiding flexibility during the swim leg. Meanwhile, PWX material over the lower body gives powerful muscle support, pushing back fatigue as time ticks by.  TMF® Aero Tri Chamois An Italian seat pad designed specifically for the demands of triathlon. 90-density high-impact foam provides perfect on-the-saddle support while the Skyve Technology removes unnecessary bulk to enhance flexibility during run and swim legs. The 'Free Edge' construction ensures the edge of the pad sits perfectly flat, reducing the risk of chafing during each triathlon leg.