Take a run, jam out to your tunes, and stay perfectly comfortable in this amazing long sleeve. Athletic cut, seamless construction, with a crew neck. Seamless construction helps prevent chafing. Knit-in mesh on arms and sides for superior breathability. Nike+ pocket at lower left sleeve with a tactile wheel dot. Cord management clips and loops on back of neck and left underarm. Swoosh logo heat transfer details on upper back of neck, lower left hem, and on Nike+ pocket. 89% polyester, 8% nylon, 3% spandex. Machine washable.