Cooling Helmet Liner That Cools Instantly When Wet, UPF 50 Sun Protection, Wear Under Helmets And Hard Hats, Lightweight Breathable Layer For Work, Bikes, And Outdoor Adventures

Cooling Helmet Liner with Wet-to-Cool Tech and UPF 50
✔️ Lightweight breathable liner with UPF 50, fits under helmets

This lightweight cooling helmet liner goes under helmets, hardhats, and other headgear. It activates with water or sweat to cool you instantly, making hot work sites, bike rides, and outdoor jobs more comfortable. Color: Digital Camo Gray.

✅ UPF 50 sun protection for all-day wear
✅ HydroActive Wet-to-Cool Technology cools fabric up to 30 degrees below body temp in under 1 minute
✅ Cools for up to 2 hours with repeat activation
✅ Breathable mesh crown for enhanced ventilation
✅ Lightweight, machine washable, and odor resistant
✅ Unisex universal fit

💡 What is a cooling helmet liner and how does HydroActive Wet-to-Cool Technology work?

It uses moisture to pull heat from your head, delivering instant relief and ongoing comfort under headgear.

- moisture-activated cooling for helmets, bikes, and work sites
- fast cooling that drops temperature quickly and lasts hours
- UPF 50 sun protection and breathable mesh crown
- unisex universal fit for most head sizes