- Front of cap provides a patch field placement for morale customization. - Cap is made out of 65% cotton and 35% polyester. - Adjustable back strap that can be changed to fit any head size. - Flexible material that's durable and breathable. - Blocks away harmful sun rays. In the Box 1X Cap Specifications: Material 65% cotton and 35% polyester. Size Adjustable California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov