Specifications: -Material: polyester -Size: as picture shown Features: -Sweat cap is designed delicately to serve you, suitable for long time use, providing you with a lot of conveniences. -Running cap is simple and convenient to use, enough to replace and share, light in weight and easy to carry, you can put them easily in your handbags, backpacks, camping bags, shopping bags, and more, bringing a fluent use experience. Package Includes: 12 x Helmet Liner Skull caps