Whether you're outdoors hiking, biking or just going about your daily routine, the Hat Ice Pack will provide you with a comfortable experience like a breeze. Carefully contoured to ensure a perfect fit with most hats, caps and helmets on the market. The small and lightweight design allows you to easily fit it into your backpack, pocket or handbag without taking up space and use it as you please. The ice pack is made of environmentally friendly and non-toxic gel material, odorless and non-irritating to the skin. Unlike disposable cooling products, our cap ice packs can be used over and over again. Simply wash them or place them in the refrigerator to restore the cooling effect, which is economical and affordable.