All No Fly Zone socks are manufactured using yarns treated with permethrin insect repellent. Odorless and durable, permethrin repels common biting insects like mosquitoes, flies, chiggers, midges, ticks, and ants. And best of all, it doesn’t alter the amazing qualities of our 100% US-made merino wool. Wearing the No Fly Zone Boulder lowers your chances of getting bothersome bites - or worse, insect-borne diseases - on your next day hike or backpacking trip.
U.S. Merino Wool
Merino wool is soft, itch-free, naturally odor- and bacteria-resistant, cool in the summer and warm in winter. We source our 100% U.S. grown merino wool exclusively from sheep raised by American farmers on American farms.
Top-to-Toe Cushion Zone
Top-to-Toe cushioning increases comfort in heavy, high-volume footwear like hiking and winter boots. Cushioning loop knit along the instep and up the shaft of the sock adds insulation while protecting the foot from stiff boot tongues and uppers.
Full-density cushioning features a terry knit loop on every interior stitch, providing better insulation, exceptional wicking, and increased protection against impact. Its faster moisture absorption keeps the skin dry and reduces friction, while its shock-absorbing nature enhances the performance of multi-sport and outdoor socks.
Seamless Toe Closure
Advanced knitting techniques create a totally flat connection in the toe box, reducing bulk and eliminating blister-generating friction.
Circumferential compression from the top of the sock through the arch creates a precise, comfortable fit that helps support the foot throughout the day.
Reinforced construction and low-stress seam placement reduce wear and tear, increasing the life of the sock.
Ingredients71% US Merino Wool
26% US Nylon
3% US LYCRA Spandex