With its breathable design and body-hugging fit, the Nike Pro HyperCool Older Kids'(Boys') Short-Sleeve Training Top helps keep you cool and dry during tough workouts or competition. Stay Dry Dri-FIT Technology helps you stay dry and comfortable by pulling sweat away from your skin to the fabric's surface, where it quickly evaporates. Stay Cool Mesh panels at the back and underarms keep the air flowing where you need it most, helping you stay cool when your workout heats up. Versatile Design A slim fit makes the top as versatile as your workout: Wear it on its own or as a lightweight base layer under your jacket or hoodie.