The Flex¹ fabric used in these shorts boasts excellent qualites: great wind protection, a stretchy structure, excellent durability and great moisture transfer capabilities. In guaranteed Norrøna style, the fabric has been tested and it fills the Oeko-Tex standard's requirements, meaning it is free of harmful chemicals. The Falketind Flex¹ Shorts are right at home on hikes, and also perform well in other summer activities. - "Technical fit": relatively body contoured, somewhat narrower model - Waist Velcro tabs - Bluesign approved product - Crotch gusset for great freedom of movement The fabric has been DWR treated for light water repellency. The treatment is PFC-free.