X-Cool quick-dry fabric regulates temperatures and wicks sweat High collar with YKK zipper allows you to vent and trap warm air No side seam provide irritation-free comfort Raglan sleeve enhance your freedom of movement Helly Hansen's HP pullover is the kind of layer you want wherever the adventure takes you. Comfortable, warm and stylish, it's great for walking, hiking, camping, skiing, lounging, sailing - you get the idea; it's an all-rounder kind of layer. Plus, thanks to its lightweight construction, it's easy to mix and match with baselayers and jackets as the conditions dictate.