Fish Monkey Boot Cut Yeti Series Heavy-Weight Boot-Crew Socks Grey XL. Using a Merino Wool/Acrylic blend and heavy cushion the Yeti will keep your feet warm during those long morning in the tree stand duck blind or frozen lake Minus 30 degrees "Bring it On" Plus a seamless toe prevents chafing These are perfect socks for cold to icy conditions paired with heavy leather boots or muck rubber boots. Specifications for Fish Monkey Boot Cut Yeti Series Heavy-Weight Boot-Crew Socks: Manufacturer: Fish Monkey Gender: Male Age Group: Adults Color: Grey Footwear Type: Socks Fabric/Material: Quick Dry Fabric Condition: New Features of Fish Monkey Boot Cut Yeti Series Heavy-Weight Boot-Crew Socks Heavy Weight for maximum warmth in extreme cold conditions Merino Wool construction for superior performance Arch and Ankle compression for reduced foot and leg fatigue Plush wool cushioned footbed for maximum warmth and moisture management Nylon reinforcement in high-abrasion areas Y-gore heel prevents slipping and chafing "Seamless" toe construction for enhanced day-long comfort Wool a natural Anti-microbial (no stink) Package Contents: Fish Monkey Boot Cut Yeti Series Heavy-Weight Boot-Crew Socks Fish Monkey SM400-GRY-XL: Boot Cut Yeti Series Heavy-Weight Boot-Crew Socks Grey XL