Ergodyne N-Ferno Shoulder2-layer economy winter liner is made up of 100% poly fleece for durability. Liner features 100% polyester shell with PU backing for long lasting use and is sold as 12 per pack. 2-LAYER THERMAL LINER Water-resistant shell with soft fleece lining for warm and comfortable protection against the elements. SHOULDER LENGTH For complete head, neck and ear coverage. LIGHTWEIGHT & LOW-PROFILE Fits comfortably under hard hats or helmets. ELASTIC RIM Creates a snug fit while trapping heat and keeping cold out. HOOK & LOOP STRAPS Chin strap plus 4 hook & loop hard hat straps keep liner securely in place. ONE SIZE FITS MOST HARD HATS. MACHINE WASHABLE. WARMING PACK POCKETS AVAILABLE ON HI-VIS Pockets by ears designed to hold warming packs (sold separately). Ergodyne N-Ferno Shoulder2-layer economy winter liner with hook as well as loop chin strap for comfort and is suitable for construction, warehousing, material handling applications.