The HAT PHASE is a cooling insert to keep your head cool. It is a flexible and lightweight accessory made of phase change material (PCM). It fits all types of headwear, such as helmets and caps, and stays in place without fasteners. Like other PHASE products, it is made of biodegradable and health-friendly PCM.
Activation:
- Cool the packs in cold water, the refrigerator, or the freezer until they are completely solid.
- Place them in the cap or helmet.
- Enjoy the cooling.