Insulate your face and neck from treacherous winter weather while comfortably lining your helmet with Rothco’s ECWCS Full Face Cover Helmet Liner.Extremely Versatile Face Covering With Multiple Applications Can Be Used As A Hardhat Liner, Helmet Liner, Neck Gaiter, Winter Face Mask, And MoreThree-Panel Design With Flatlock Seams Enables The Reusable Face Mask To Form A Comfortable Buffer Between Your Head And Your Military Or Tactical Helmet While Providing Robust Thermal InsulationExtreme Cold Weather Face Mask Is Part Of The Extended Cold Weather Clothing System (ECWCS) Developed By The American Military In The 1980sLightweight Balaclava Mask Is Constructed From Rugged 100% Expedition Weight Polyester For Several Seasons Of Reliable Use All Winter LongOne Size Fits Most | 14” Flat Length, 11” Flat Width, And 6” Eye And Nose Opening