Awesome for cooler, wetter conditions, the Belleville 770 200g Insulated Waterproof Combat and Flight Boot (Black)delivers 200g of exceptional Thinsulate insulation on the inside and a Gore-Tex waterproof bootie on the outside for protection from the elements. Both of these allow your feet to stay warm, dry and comfortable during even the longest day outdoors or in slippery, wet conditions. One of the special features of this incredible Belleville 770 duty boot is the Vibram Fire and Ice outsole, which is made of a special rubber compound that won't harden in cool temperatures. This provides exceptional traction in icy, slippery conditions.