MISSION Cooling Helmet Liner — Digital Camo Grey, Low-Profile UPF 50 Cooling Headwrap for Helmets & Hardhats

MISSION Cooling Helmet Liner cools instantly when wet, fits comfortably under helmets and hardhats, and offers UPF 50 sun protection in digital camo gray.

This lightweight liner is engineered to lower skin temperature quickly using HydroActive Wet-to-Cool Technology while remaining low-profile enough to wear beneath bike helmets, construction hardhats, or tactical headgear. Made from breathable fabric with a mesh crown, it’s machine washable, odor-resistant, and designed for repeated activation on long shifts or rides.

How quickly will the liner cool me down?

Activation is fast: when wetted and wrung out, the fabric begins cooling in under a minute and can feel up to 30°F (≈17°C) cooler than average skin temperature. Cooling duration depends on conditions, but the liner typically stays noticeably cool for up to two hours and can be reactivated simply by wetting and waving.

• HydroActive Wet-to-Cool fabric activates in under 1 minute
• Can feel substantially cooler (up to ~30°F) on contact
• Reactivatable in the field by wetting, wringing, and waving
• Effective cooling for up to 2 hours per activation

Will it fit under my helmet or hardhat comfortably?

The liner is cut slim and designed for low bulk so it slips under most helmets and hardhats without altering fit or safety clearance. A mesh crown improves airflow, and the unisex universal fit accommodates various head shapes and sizes.

• Thin, compact profile fits beneath helmets and hardhats
• Mesh crown for enhanced breathability under headgear
• Universal unisex sizing for all-day comfort
• Packs down small—stores easily in a pocket or tool bag

How do I care for the liner and does the cooling wash out?

The liner is machine washable and engineered so the cooling technology remains effective after repeated washes. It resists unpleasant odors, helping it stay fresh through long shifts and frequent use.

• Machine washable for easy cleaning
• Cooling treatment is durable and won’t wash out
• Built-in odor resistance for lasting freshness
• Easy to reactivate after laundering by wetting and waving

What protection does the liner provide from the sun?

MISSION’s liner delivers UPF 50 fabric protection, reducing ultraviolet exposure to the covered areas of your head and neck. It’s a practical layer to combine with a helmet or cap when spending extended time outdoors.

• UPF 50-rated fabric for strong UV defense
• Covers scalp and upper neck under helmets
• Pairs with helmets for added sun protection on site or trail

Who is this for? The MISSION Cooling Helmet Liner is built for workers, athletes, and outdoor enthusiasts who need reliable cooling and sun protection while wearing helmets or hardhats. If you do long shifts in hot conditions, bike, ride, or participate in tactical activities, or simply want a compact, washable cooling solution in digital camo gray, this liner offers practical, repeatable cooling without adding bulk.