The Oslo is a comprehensively featured insulating jacket with both Polartec fleece and Primaloft insulation, it also incorporates Helly Hansen H2FLOW technology. The Helly Hansen 73363 features: EN 14058 cl 1 Cold protection norm certification. Outer fabric is 100% Polyester - 52 g/m2. Insulation consists of; PrimaLoft Synergy 100g and Polartec Fleece - 100% Polyester - 200 g/m2. Hand pockets with hidden zippers. Can be zipped into 71363 jacket. Hidden ventilation zippers on the front of the jacket. Elasticated adjustable bottom hem.See all Oslo products here