The Lt Hike is part of our new ECO product line engineered with recycled yarns! Made using recycled polyester yarn and Recover RWoolA(R), this exciting product is amazingly soft, comfortable, durable, AND sustainable. It&';s a breathable lightweight Double Layer blister-free sock and is designed for an outdoor performance fit. Ideal for light hiking, walking, trail running, and casual wear. Nearly 2 plastic bottles used in each pair combined with Post-Industrial wool scraps! OUR NO-BLISTER SOCK FEATURES Made using Post Industrial wool scraps and recycled PET bottles Recycled Polyester inner and Recover RWoolA(R) outer Stabilizer Zone(TM) in arch locks sock in place Versatile design for everyday High needle count for added durability Certified, Sustainable, and Blister-Free socks - No Blisters, Guaranteed! BLISTER-FREE RUNNING SOCKS FIBER CONTENT Inner Layer: 70% Recycled Polyester, 26% Nylon, 4% LycraA(R)Outer Layer: 71% RWOOLA(R) Upcycled Wool, 24% Nylon, 5% 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 SOCK SIZING GUIDE The right fit is essential for blister prevention! View our sizing chart below. We invite you to contact us for any additional information or head to our FAQ page to find the answers to common customer questions. As an American-made, family-owned business, we thank you for choosing Wrightsock anti-blister socks!