N-Ferno 6853 Thermal Trapper Hard Hat Liner is designed to provide maximum warmth, comfort and thermal protection for workers wearing hard hats or safety helmets in cold, demanding environments. Its trapper-style design combines a durable, windproof and water-resistant polyester shell with 60 grams of 3M Thinsulate insulation and a full fleece interior to help retain heat and provide soft, comfortable coverage.

A fleece-lined forehead panel helps seal in warmth, while the extended side flaps provide additional insulation around the ears and sides of the face. The low-profile design fits comfortably under hard hats and safety helmets without adding unnecessary bulk, making it suitable for extended wear in cold conditions.

Four exterior attachment points integrate with hard hat or helmet suspensions for a secure, seamless fit. A chin strap with a YKK adjustable buckle allows for a personalized fit and helps keep the liner securely in place during active work. A reflective accent improves wearer visibility in low-light environments.

Ideal for construction, freight, drilling, mining, delivery services and warehousing, as well as outdoor activities such as skiing and snowboarding.