Nike Men's Pro Combat Core Compression 3/4 Tight Nike Dri-FIT fabric - Wicks away moisture to help keep you dry and comfortable. Elastic Drawcord Waistband - For a snug and adjustable fit. Ergonomic Flat Seams - Map the natural contours of your body to help reduce friction and chaffing while providing great range of motion. Nike Pro Fabric - Helps you stay dry and comfortable by wicking sweat away from skin to the fabric's surface, where it quickly evaporates. Spandex - Enhances freedom of movement, and it's also brushed for a soft feel and matte finish.