Fjallraven Abisko Trekking Tights HD are ultra-durable and durable tights designed for the most challenging hikes and mountaineering adventures. Its stretchy double-knit fabric is made from recycled polyester and the seat and knees are reinforced and DWR treated for added protection in wet and rough terrain. There are two leg pockets on the sides: one with a zipper and one open for storing things like phones, keys or snacks.