2XU Men's Apparel Size Chart The 2XU X-VENT Tri Singlet uses technology like HIGH FIL fabrics and cross channeled yarns to wick away sweat, no matter the conditions. It's all about staying cool and comfortable under pressure. And, most importantly, remembering to breathe. Sometimes, the simple act of letting go can help you achieve more than you ever imagined. Of course, you've got to put in the hard work, but when it's go-time, the feeling of wind in your hair and cool breeze on your skin is unbelievably powerful. That's why the 2XU X-VENT Tri Singlet provides the breathability and ventilation you need amp up your performance and surpass your goals. Features: - ICE X Technology. Utilizing the worlds most advanced cooling technology. 2XU has yarns with Xylitol for surface fabric cooling, UV reflectors so garment will not absorb the heat from the sun. Also included are high filament yarns for quick dry performance that will help you stay cool and comfortable for all race distances - Sensor Mesh X Fabric with Ergonomic Panels. Experience serious breathability and support throughout your tri - Flatlock Stitching & 3 Rear Pockets. Get built in comfort that won't chafe plus storage for fuel