The Nike Phenom Elite Trousers are made from stretchy, lightweight fabric. This version provides a more refined and freeing fit than its predecessors, giving you a slim feel throughout the leg that tapers towards the ankle. This product is made from at least 50% recycled polyester fabric. Run Free An updated woven fabric has a lightweight feel. Its stretchy design helps you move freely throughout every stride. Cooling Where It Counts Designed with runner-informed heat mapping, these trousers feature ventilation where you need it. Stretch-woven fabric with a grid face at the top of the back, on the inner-leg gusset and at the back of the knee helps keep the air flowing with every mile. Essential Storage A lined media pocket in the middle of the back helps keep your essentials stored. Side pockets offer extra space for your small items, with a drop-in pocket on the right-hand side for a key or card.