MISSION Cooling Helmet Liner White — Skull Cap, Wet-Activated Instant Cooling & UPF 50 Sun Protection

If you spend time working or playing outdoors in heat, the MISSION Cooling Helmet Liner is designed to help you stay cooler without bulky gear. This skull cap uses a chemical-free, reusable fabric that activates with water to drop temperature quickly, fits under many helmets and hardhats, and offers ventilation and sweat control for active use.

How does the helmet liner cool my head so fast?

The liner uses a proprietary fabric technology that evaporates water efficiently to produce a drop in temperature when wet. Activation takes under a minute and the cooling effect can last up to about two hours, depending on conditions.

• Activate in three quick steps: wet it, wring it out, snap it to initiate cooling.
• Cools up to roughly 30 degrees below average body temperature in under 30 seconds under ideal conditions.
• Reusable and machine washable; cooling function is permanent and chemical-free.

Will it fit comfortably under my helmet or hardhat?

The liner is cut as a close-fitting skull cap designed to sit low on the head and stay tucked under helmet liners and straps. Lightweight, flexible fabric and a ventilated crown make it compatible with most motorcycle, bike, football, lacrosse, and safety helmets without adding bulk.

• Feather-light construction that won’t shift or bunch under a snug helmet.
• Crown mesh panels improve airflow and reduce sweat buildup.
• Slim profile preserves helmet fit and retention system effectiveness.

How do I care for the liner and keep it working?

Caring for the MISSION Cooling Helmet Liner is simple: machine wash and air dry as needed. The cooling performance comes from the fabric’s structure rather than a topical chemical, so it remains effective wash after wash.

• Machine washable; follow tag instructions for best longevity.
• No recharging or special solutions needed—just water to activate.
• Durable construction intended for repeated outdoor and work use.

What activities is this skull cap best suited for?

This liner is versatile for athletic, recreational, and work settings. Use it under helmets during sports, on-site with a hardhat, or alone for runs, hikes, and outdoor jobs when you want instant cooling and sun protection.

• Compatible with biking, motorcycling, football, lacrosse, and other helmeted sports.
• Useful for construction, landscaping, delivery, and other outdoor professions.
• Also practical for solo workouts, hiking, and everyday outdoor chores.

Who is this for: The MISSION Cooling Helmet Liner suits anyone needing quick, portable cooling while active outdoors—athletes, tradespeople, weekend warriors, and commuters who wear helmets or hardhats and want a lightweight, washable solution with UPF 50 sun protection.