Polyester genuine us u.s. united states government surplus military issue official cold weather m-65 jacket liner olive drab quilted polyester pile batting open underarms mid layer. The M65 field jacket liner is designed to be buttoned into the M65 field jacket for increased warmth. These military field jacket liners button into all Military Spec M-65 Field Jackets. The m65 field jacket liner is 100% nylon quilted shell with 100% polyester filling. The m65 field jacket liner is available in O D green . It is available in sizes S – XL. These liners make excellent additions to your roadside emergency kit or camping gear. Also make a great camping pillow if you stuff jacket down one sleeve.