{"product_id":"mission-cooling-helmet-liner-white-instant-water-activated-cooling-upf-50-low-profile-fit-under-helmets","title":"MISSION Cooling Helmet Liner — White, instant water-activated cooling \u0026 UPF 50, low-profile fit under helmets","description":"\u003cp\u003e\u003cstrong\u003eMISSION Cooling Helmet Liner is a lightweight skull cap that cools instantly when wet, fits comfortably under helmets and hardhats, and provides UPF 50 sun protection.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eStay cooler during long shifts, rides, or workouts with a liner built to be activated by water and reused again and again. The fabric uses a permanent, chemical-free cooling technology that reacts within seconds when wet, and the slim, ventilated design slips under motorcycle, bike, and work helmets without bulk. It’s machine washable and made to support active days in sun, heat, and physical work.\u003c\/p\u003e\n\n\u003ch3\u003eHow quickly does this liner cool and how do I activate it?\u003c\/h3\u003e\n\u003cp\u003eThe liner cools within about 30 seconds of activation and can stay noticeably cool for up to two hours depending on conditions. Activation is simple and requires only water—no gels, sprays, or chemicals.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWet the liner thoroughly with water.\u003c\/li\u003e\n  \u003cli\u003eWring out excess so it’s damp, not dripping.\u003c\/li\u003e\n  \u003cli\u003eSnap or shake to speed evaporation and cooling.\u003c\/li\u003e\n  \u003cli\u003eRe-wet to renew cooling as needed throughout the day.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill it fit under my helmet or hardhat without interfering?\u003c\/h3\u003e\n\u003cp\u003eYes — the skull cap is cut slim and made from featherweight, ventilated fabric so it won’t add bulk or push your helmet off position. A ventilated crown helps airflow while the snug fit keeps sweat away from eyes.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLow-profile design fits under motorcycle, bike, and work helmets.\u003c\/li\u003e\n  \u003cli\u003eStretch fabric conforms to different head shapes and sizes.\u003c\/li\u003e\n  \u003cli\u003eMesh panels at the top increase breathability under enclosed helmets.\u003c\/li\u003e\n  \u003cli\u003eThin profile prevents helmet pressure points and maintains proper fit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow durable is the cooling effect and how do I care for it?\u003c\/h3\u003e\n\u003cp\u003eThe cooling performance is built into the fibers and does not wash out, so the effect remains after repeated use and machine washes. Routine washing keeps the liner fresh without degrading the textile cooling action.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePermanently integrated, chemical-free cooling technology.\u003c\/li\u003e\n  \u003cli\u003eMachine washable — follow gentle cycle and air dry recommended.\u003c\/li\u003e\n  \u003cli\u003eReusable hundreds of times; reactivates simply with water.\u003c\/li\u003e\n  \u003cli\u003eUPF 50 protection continues through normal wear and washing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat activities is the liner best suited for?\u003c\/h3\u003e\n\u003cp\u003eThe design is versatile for both work and play: wear it under hardhats for outdoor jobs, under bike and motorcycle helmets, or alone for running and training. It’s especially useful when heat or sun exposure can reduce comfort or performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eConstruction, landscaping, roofing, and other outdoor work.\u003c\/li\u003e\n  \u003cli\u003eMotorcycling, cycling, and other helmeted sports.\u003c\/li\u003e\n  \u003cli\u003eRunning, CrossFit, hiking, and team sports like football or lacrosse.\u003c\/li\u003e\n  \u003cli\u003eAny hot-weather activity where sun protection and cooling help.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: The MISSION Cooling Helmet Liner is made for people who need reliable, instant cooling without added chemicals or bulk — tradespeople and outdoor workers who wear hardhats, riders and athletes who require a slim helmet-compatible cap, and anyone who wants UPF 50 sun protection plus on-demand cooling during active work or workouts.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I wash the MISSION Cooling Helmet Liner?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It’s machine washable and the chemical-free cooling technology remains effective after washing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How long does the cooling last after activating with water?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Cooling can last up to about two hours depending on temperature and activity; re-wet to refresh the effect.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"MISSION","offers":[{"title":"Default Title","offer_id":55164519416151,"sku":"B00UR4HLD8","price":31.74,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/mission-front-view-helmet-liner.jpg?v=1790353132","url":"https:\/\/britishgarage.co.uk\/products\/mission-cooling-helmet-liner-white-instant-water-activated-cooling-upf-50-low-profile-fit-under-helmets","provider":"British Garage","version":"1.0","type":"link"}