Workcool Hyperfreeze is a market leading cooling technology that has been designed to help keep you cool and comfortable, even in hot and humid conditions. Hyperfreeze fabric finish for added cooling Side mesh panels for increased airflow and cooling Welt chest pocket with button closure and pen partition Flat seam construction for next to body comfort Materials: 100% Polyester 170gsm Features: Airflow - Engineered ventilation placed in high heat zones to allow air to flow through to the body, improving breathability and keeping the wearer cool and comfortable.