The B110 is a showerproof combat smock used by Special Forces & military units around the world. It hasn’t got a lining, but that doesn't mean it misses out on any of the critical features of an Arktis jacket. The smock is a fine performer for hot climates and with the right layers, cold climates too. The fabric is made from hardy 50/50 Ripstop, which is one of the toughest fabrics on the market. In the event your smock does get a tear or hole, the special cross-weave design prevents it from spreading. The Ripstop has a DWR finish so it’s shower-proof and the pockets are nylon-lined making them waterproof to the outside.