The Full Zip Jacket 400 is a sweater that has a full-length zipper and a nice collar with the Woolpower logo. A year-round jacket, good as a warming extra layer, under your trenchcoat or winter coat, or as an outdoor sweather for the warmer seasons. The sweater, which we at NORDIC WOOL have in four colors, is made of Ullfrotté Original 400, which is Woolpower’s own fabric developed in the early 1970s. It is thin and light, but still insulates body heat effectively. The sweater has thumb holes and a long back to better keep you warm.