fleece jacket windblock division genii 8074M Tac Division fleece jacket is equally perfect for cool and cold weather. For the former, you can use it as an outer layer, for the latter as insulation under a jacket or parka. Made of 100% polyester. The structure of the WindBlock membrane is designed for conditions of low and extremely low temperatures in such a way that 80% of body heat is reflected back and only 20% is lost through the membrane. Most of the modern membrane fabrics with surface