Nike Dri-FIT technology moves sweat away from your skin for quicker evaporation, helping you stay dry and comfortable Mesh at the back panel lets air flow to help keep you cool during high-heat training and competition A wide elastic waistband holds the leggings in place A wide elastic waistband holds the leggings in place BREATHABLE AND SUPPORTIVE. The Nike Pro 365 Leggings wrap you in soft fabric that moves as you stretch, lunge and sprint your way through your toughest workouts. This mindful design is made with at least 75% recycled polyester fibers and mesh at the back panel that lets your skin breathe when the temp starts to rise.