Slip into the lightweight, moisture-wicking sock liner that&';s perfect for summer wet-wading or layering with standard socks for extra warmth on chilly days. Product Specifications: The body, heel, and toe boxes are knitted with a polypro yarn that wicks moisture and is highly breathable Nylon yarns are knitted into high-wear areas for enhanced durability Mid-calf height Made in the USA Product Specifications: Fabric: 64% Polypropylene, 33% nylon, 3% LycraA(R) Spandex