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Farm to Feet

All No Fly Zone® socks are treated with permethrin insect repellent

About No Fly Zone® Technology

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.

Boulder NFZ Medium Weight

Womens

This medium-weight traditional hiking sock is ideal for colder temperatures. US-grown merino wool provides exceptional insulation and cushioning.

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Madison NFZ Medium Weight

Womens

This do-it-all outdoor sock for cool and colder weather features advanced hidden plait construction, full-density cushioning, and 100% U.S. merino wool.

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Boulder NFZ Lightweight

Kids

Featuring the same 100% American merino wool as its adult counterparts, this lightweight Boulder sock is perfect for your young explorer.

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Boulder NFZ Lightweight

Mens

The Boulder is our take on the classic hiking sock, with outer plaiting for durability and 100% U.S. merino wool for cushioning and comfort.

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Madison NFZ Medium Weight

Mens

This medium-weight adventure sock brings excellent support, performance, and comfort to any outdoor pursuit, from hiking to hunting and fishing.

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Ansonville NFZ Medium Weight

Performance Wader

The Ansonville is a high-performance over-the-calf sock designed for the sporting outdoorsman, striking the ideal balance between support and comfort.

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Burlington’s No Fly Zone® Insect Repellent Technology continues to lead in the fight against biting insects like mosquitoes and ticks. No Fly Zone is a permethrin-based technology that may help prevent the spread of insect borne diseases by repelling insects through apparel, uniforms or gear. This technology is similar to the natural insect repellent found in certain chrysanthemum plants and works as a contact repellent affecting the insect's nervous system causing it to fly away before a bite can occur.

No Fly Zone