Men's reversible Aclima StreamWool hoodie. Front kangaroo pocket with zipper. Double fabric on the shoulders for added comfort when carrying a backpack. WarmWool underarms for optimal breathability. StreamWool is Aclima's newest fiber, which is used to make reversible products. The fiber gets its name from the wavy shape of one side of the fiber, while the other side is a smooth, soft knit. The combination of these creates hollow, wavy channels in the fiber that trap air and effectively maintain heat no matter which way you want to wear the garment. StreamWool is one of Aclima's warmest materials. Non-chafing seams Long sleeves with thumbholes Total Easy Care treated - no itch and very little shrinkage Weight 600 g (size M) Material 99% merino wool, 1% elastane Fabric weight: 400 g /m² (19.5 microns)