S-XX-Large (XL), 2XL (3XL), XXL (4XL) sizes available in various colors and styles. S-X-Large (XL) sizes are 100% cotton. 3XL-XXL sizes are 90% cotton, 10% polyester. 4XL-5XL sizes are 85% cotton, 15% polyester. All sizes are pre-shrunk and machine washable.