Tie Hat Evaporative Cooling Part No. ER-6710 Triangle hat fully covers the head for complete cooling Evaporative cooling process keeps you cool all day, reduces the effects of heat stress, and fights fatigue. Lightweight, comfortable cotton construction provides all day comfort anywhere heat slows you down. Super absorbent acrylic polymer activates easily and quickly when soaked in cold water 20 minutes. Remains hydrated, providing cool comfort for 24 to 48 hours. Reusable, just resoak Tie closure for personal fit One size fits all