The 6613 Hard Hat Cooling Ratchet Pad (3-Pack) is designed for integration with hard hats and safety helmets to provide both comfort and cooling for all-day wear. Featuring a low-profile design, it cushions the back of the head for added comfort and provides instant cooling relief when activated with water. When dry, the moisture-wicking fabric effectively draws sweat away from the head, and its breathable microfiber material enhances comfort for all-day use. The cushioned pad i