Ultralight with a dialed in precise fit, Darn Tough's Tab No Show Socks are loved by runners and cyclists for their breathable, blister free comfort and performance.. . Ultralight no cushioning no show height with handy tab for easy onoff. Ultrasoft fine gauge merino wool, nylon, and Lycra spandex in a high density knit for Darn Tough durability. Breathable, fast drying merino wool keeps feet cool in summer and warm in winter, manages moisture to help keep feet dry, and naturally resists odor for stink free wear. True Seamless construction: Undetectable toe seam for a smooth, almost invisible feel that reduces hotspots and blisters. Knit in arch support, form fitting toe box, and sculpted heel pocket enhance fit no bunching, no slipping, no blisters. Knit in elastic arch support provides added endurance. Machine wash warm inside out, gentle cycle tumble dry low will not shrink, or air dry. Made in Vermont, USA.