For work, hunting, hiking and everyday, reach for these Guide GearA(R) Midweight Lifetime Socks with NanoGlideA(R). They're made in the USA with a smart blend of performance fabrics that provide superior comfort, durability and breathability. Plus, they feature NanoGlide, a special fabric treatment that reduces heat and friction to prevent blisters. 61/20/10/5/2/2 acrylic / merino wool / nylon / polyester / NanoGLIDE nylon / LYCRAA(R) spandex Cushioned for lasting comfort on your feet Ankle and foot-hugging design moves with you Moisture-channeling NanoGLIDE fabric keeps you dry Friction-reducing toe seams Midweight for a blend of mobility and warmth Medium: Fits men's shoe 5-9 and women's shoe 6-10 Large: Fits men's shoe 9-12 and women's shoe 10-12 Extra Large: Fits men's shoe 12-15 Made in the USA Act now!