New Balance Boys' Sleeveless Tee and Short Set Tee: 80% Polyester, 20% Cotton; Short: 100% Polyester Imported Pull On closure Machine Wash Youth boys Made with moisture-wicking dry fabric is fast drying and releases moisture away from the body Tee features neck taping and athletic themed graphics; relaxed fit: drapes loosely from the chest, waist and hip for total comfort and ease Short features side seam pockets Reflective newborn logo