Outer shell is Polyester Taslan 330-T which is PU coated. It make suits look better and lighter in weight. Lining is Polyester 210-T PU Coated which is dyed using only azo-free materials in the production process which is quilted with 100 gm Primasoft ® insulation, silicon layer and 45-grm Thinsulate which keeps you warm in minus altitudes. Two long 2-way - double slider front zips from neck to ankle. Pull-cord on neck for snugness, large zipped chest pocket and 2 other pockets on complete suit. Elastic cotton Rib at inside cuff which stop air to go inside. All zippers are YKK