M‑Tac Fleece Jacket Windblock Division Gen IIThe M Tac Windblock Division fleece jacket is equally perfect for cool and cold weather. In the first case, you can use it as an outer layer, in the second as insulation under a jacket or parka. Made of 100% polyester. The structure of the WindBlock membrane grid is designed for conditions of low and extremely low temperatures in such a way that 80% of body heat is reflected from the surface to the inside and only 20% (excess heat during active