SWEAT-WICKING COMFORT PERFORMANCE LAYERING Designed as either a base layer or performance layer on game day or at the gym, the Nike Pro Men's Short-Sleeve Training Top features sweat-wicking, durable fabric & four-way stretch to keep you dry & comfortable during your workout. DRY COMFORT Fast-drying Dri-FIT fabric wicks sweat quickly. BUILT TO MOVE Stretchy fabric hugs your torso while design lines follow the shape of shoulders & arms to promote natural movement.