Treated With No-Fly Zone Treatment, Bushwacker Bug Blocking Socks Actively Repel Ticks, Chiggers and Many Other Biting Insects for Up to 70 Washes. No Fly Zone is Totally Scent Free and Approved by the EPA Perfect Sock for Hiking and Hunting. Deter Ticks that carry Alpha-Gal Syndrome and Lyme Disease While in the Woods or Tall Grass. The Secondary Cuff Holds Pant Legs in Place and Secure Thereby Preventing Ticks, Chiggers and Other Biting Insections from Crawling Inside Your Pant Legs Ultimate Outdoor Sock. One Layer of Sock sits against the skin for Comfort, the Second Cuff Seals and Secures the Pant Leg So that Ticks, Chiggers, and Other Biting Insects Cannot Crawl Inside Your Pant Legs Great For Working People. Merino Wool Construction for All Day Comfort and a Secondary Cuff to Keep Ticks, Chiggers and Other Biting Insects Away While You are Working on Your Job. Merino Wool Double-Cuff Sock Features Second Cuff that Seals and Secures Your Pant Legs to Prevent Ticks and Other Biting Insects from Reaching Your Skin. Treated With No Fly Zone Insect Repellant Bushwacker Socks Actively Repel Ticks and Other Biting Insects for up to 70 Washes. Proudly Made in the USA