Materials & Care + Materials Body: 100% cotton, Ribbing: 95% cotton, 5% polyurethane Care Machine wash Dark colors may fade, so avoid washing with other items [especially white and light colors]. Use detergent without fluorescent whitening agents for off-white and light colors. Avoid soaking in water for extended periods. After washing, promptly reshape and hang to dry in the shade. Avoid using a dryer after washing. Use a laundry net. When ironing, use a pressing cloth.