The 2XU Vented Short Sleeve Compression Top is engineered for muscle containment and supporting the upper body, shoulders and core region allowing better maintenance of posture, improved breathing and agility while training and competing. Constructed to provide power and muscle protection while being flexible to ensure unrestricted mobility. The design and cut of this top with mesh panels provides maximum breathability and strength to the core of the body. ACTIVE USE Training & Competition Aerobic Sports Running/Walking/Cycling Gym/Fitness General Sports Paddle & Water Sports Outdoors Sports - Climbing, Hiking.