2XU Men's Tri Apparel Size Chart Previously exclusive to sponsored 2XU athletes, the high performance Swim Skin is engineered with next generation Yamamoto water slicing technology for unmatched speed through the water. This suit features panels built from 2XU's new HYDRO- TECH TRI SKIN fabric; engineered with Yamamoto's next generation water slicing technology for unmatchable speed. On the back, 2XU's new paper thin TRI SKIN delivers incredible breathability to prevent the wearer overheating in the swim. Features: - Fast through water + air - Light, breathable + quick drying - High gauge knit structure for power + endurance - Lowest possible grad coeffecient through the water + air.