Introducing the new Merino Trail! A single-layer performance sock with a luxurious feel! This sock is perfect for hikers or trail runners who want a bit more cushion in a single layer sock. Your trail run has never been more comfortable! The Merino Trail Single-Layer Crew Trail Sock Features: Merino Wool- Odor Resistant, Temperature regulation, sustainable material Cushioned padding for extra protection Seamless Toe Anatomical heel pocket Ventilated mesh top for improved breathability Trail Running Sock Fiber Content: These socks are composed primarily of eco-friendly Merino Wool. Merino Wool, helping you enjoy blister-free trail adventures while protecting the ground beneath your feet. 74% Merino Wool, 20% Nylon, 6% Lycra SOCK SIZING GUIDE Finding the right fit is essential for blister prevention! You can 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 single-layer running socks.