The Driven Hunt HSP Insulated cap is lined and warm. In addition to its soft-fleece, fold-down ear flaps and windproof HSP membrane, the cap has a Thermo Poly Shield™ Fill padded lining. The Driven Hunt HWS Insulated cap is made from a durable fabric of 84% polyester and 16% polyurethane. The fabric has been given a DWR treatment to make it dirt- and water-repellent. The cap is lined with 80-gram Thermo Poly Shield™ Fill wadding and a wool lining for comfort. On cold, windy days, the attached fleece-lined ear flaps can be folded down to protect the ears and neck. The cap has a windproof Härkila Storm Pro (HSP) membrane. The Driven Hunt HSP Insulated cap has an elasticated drawstring adjustment at the neck, to give a close fit around the head and keep the warmth in.