HyperKewl 6536-BK Evaporative Cooling Skull Cap, Black

Hyperkewl evaporative cooling skull cap is a great combination of functional cooling and classic skull cap style. The patented hyperkewl cooling fabric inner layer within the cooling skull cap will actively cool for 5-10 hours keeping the wearer cool and avoiding heat stress. Mesh outer layer allows optimum airflow even while wearing a hard Hat or bump cap. The fasten on the back allows for comfortable fit. One size. Made with 100% cool mesh for optimum airflow . Tie fasten on back for optimum fit . Provides 5-10 hours of cooling with hyperkewl inner layer . No bulging GELS or harmful chemical crystals.