Our Escape Over the Calf is a versatile performance sock with a great fit and feel. This lightly cushioned sock features hidden terry loops from heel to toe for all-day comfort hiking the trails, walking the dog, or working in the office. Anti-Blister Hiking Sock Features Recycled Polyester performance yarns improve moisture management and increased durability Stabilizer Zone(TM) to help lock the sock in place Mesh panel for breathability Lightly cushioned footbed in the inner layer Blister-Free socks - No Blisters, Guaranteed! Blister-Free Sock Fiber Content These anti-blister hiking socks are composed largely of eco-friendly RRecycled Polyester-materials made from recycled plastic bottles. By choosing Wrightsock, you can enjoy blister-free hiking adventures while protecting the world beneath your feet. Inner Layer: 70% Recycled Polyester, 26% Nylon, 4% LycraA(R) Outer Layer: 68% Recycled Polyester, 24% Nylon, 8% LycraA(R) Double Layer Seamless Toe Wrightsock&';s Double Layer styles offer a seamless toe like most performance socks do these days; however, as you can see on the below images, Wrightsock&';s seamless toe looks a bit different. This is due to the required attachments that connect the inner and outer layers together for our Double Layer system. Even though it looks a bit odd, our seamless toe acts and feels the same on your foot as any other seamless toe design. Anti-Blister Hiking Sock Sizing Guide Finding the right fit is essential for blister prevention during your hiking adventures! View our sizing chart below for guidance. We also welcome you to contact us or head to our FAQ page to find the answers to commonly asked customer questions. As an American, family-owned business, we thank you for choosing Wrightsock.