Designed for extremely hot trail running environments, feels cool to the touch and light as a feather. It easily folds up for compact storage. Dual-sided mesh pockets can insert ice packs or crushed ice, like a "carryable AC". It delivers continuous physical cooling to your head, helping you stay sharp and focused during long trail runs or hikes. The adjustable elastic drawcord ensures a secure, customized fit for multiple head sizes. Reflective details enhance visibility for night safety. On mountains, on streets, it keeps you cool, stylish, and running with confidence.