Is it for a windbreaker? Or a sweatshirt? It doesn't matter. This functional jacket has two inventions that will solve your dilemma: tightening the sleeve to a threequarter length and side zippers for a proper luft. We'll probably get a Nobel Prize for this. If not, don't worry, as long as you'll be fine outside in it. Functional windbreaker made of 100% recycled polyester Water column 10,000 mm, breathability 10,000 g/m2/24h Comfortable stretch lining Smoothrunning SAB steel zippers All seams taped for maximum functionality Sleeves can be shortened to 3/4 length Ecofriendly DWR PFC Free waterrepellent treatment without harmful substances