Our Cooling PVA Towel is activated by water to keep you cool on the jobsite. Run or submerge it under water for 30 seconds for full absorption, wring out any excess water, and repeat when dry. Once activated, the PVA towel wicks away moisture and heat for up to 4 hours of cooling time. It features a UPF 50+ rating to block harmful UV rays, comfortable material, and machine-washable construction.