Our Cooling Neck Gaiter is designed to be activated by water and features Wet-To-Activate technology to help you KEEP COOL on the jobsite. Submerge it in water for 30 seconds for complete absorption, then wring out any excess water. Repeat when dry. When activated, it wicks moisture and provides up to 2 hours of cooling. Its breathable material and four-way stretch fit deliver lasting comfort. It provides UPF 50+ sun protection, is designed as one size fits most, and is machine washable.