Features zippers at the ankle for comfortable coverage in the gym or on the road. Standard fit for a relaxed look and feel. Sweat-wicking fabric made with 100% recycled polyester fibers. The Nike Relentless pants feature sweat-wicking fabric and zippers at the ankle for comfortable coverage in the gym or on the road. This design has just the right amount of weight while being 20% heavier than the Nike Epic pants. This product is made with 100% recycled polyester fibers.