The Winter Hard Hat Liner is just the right fit for retaining body heat that would normally escape in the cold weather. A chilly scalp can cause your core body temp to drop faster than it normally would and cause potential hazards in the winter weather. The Hard Hat Winter Liner has two layers for extra warmth and it is mid-length to provide additional coverage. The cold weather hard hat’s lining provides additional comfort and features 100% cotton twill with fire retardant until washed. Put on your Hard Hat Winter Liner with your hard hat to stay safe and warm this winter. The safety helmet winter liner is compatible with all hard hats and is washable.