The Nike Vent Max Pants are made of soft, stretchy fabric to allow you to move freely during and after your workout. The tapered fit reduces distractions and keeps you focused durant during your workouts and exercises. This model is made with at least 75% recycled polyester fiber. The tapered fit follows the natural shape of the legs to reduce distractions and ensure maximum concentration. The elastane in the fabric blend gives this material lightness and elasticity to allow you to excel without being restricted by your clothing.