Lightweight Guide BugStopper® Socks utilize a leading-edge blend of fibers that dump moisture, kill odor, and house Insect Shield® tech for protection against insects. Starting with premium merino wool, socks are finished with nylon, polyester, and LYCRA® stretch. Right Angle® arch support improves overall comfort across varied terrain, while the mid-calf height and lightweight feel excel both inside waders or working in concert with your street-savvy kicks. Made in the USA.