- Reusable cooling technology: The gel provides long lasting temperature control with a cycle stable formulation. Eco friendly cooling without the need to regularly replace cooling packs. - Portable cooling system: Delivers even cooling, helping you manage heat on summer outdoor activities and in hot environments. - Practical everyday use: Flexible cooling pad fits baseball caps, sun hats and helmets. Universal fit supports different head coverings and delivers extended cooling for work, travel or outdoor sport. - Instant cooling: After fridge chilling, it activates immediately. The durable PVC gel pad quickly absorbs excess body heat for lasting refreshment and effective relief from summer heat. Use scenarios - On outdoor work sites, construction or delivery routes, worn under or inside a helmet or cap to stay cool during hot shifts. - During outdoor recreation such as hiking, cycling, running events, or festivals to maintain comfortable temperature over extended periods. - For daily commutes, travel, or long days on the road when wearing caps or visors in hot weather.