The FITS Seasonal Solids Light Cushion Crew Sock is based on our most popular ORIGINAL FIT style. A balanced base layer with a lightweight profile, strategically-placed LIGHT cushioning zones, and the &';custom-fit-feel&'; of our patented &';Y-Line&'; knitting structures. While we call it a light hiker, it&';s remarkably versatile, comfortable, and loved for all sorts of wearing occasions. Hike, Run, Walk, Train, Climb, Bike, All Day Patented Whole Foot Comfort Engineering 144N Knit with a fine gauge merino wool for temperature regulation and ultimate softness. Wicks moisture, dries fast, and resists odors. Patented Free Range Toe Box ensures room for your toes while contouring around them. Patented Deep Heel Pocket wraps the foot, holds in place, and prevents blisters. Patented Upright Compression tapers to the leg&';s natural shape, stimulates blood flow, and keeps the sock from falling down. Strategic cushion zones in the heel, toe and arch. Material Our materials are crafted to optimize odor resistance, durability, breathability, stretch, and moisture-wicking. Merino Wool 65%, Nylon 27%, Polyester 6%, Lycra 2% Care To avoid pilling, turn socks inside out before washing. Machine wash in cool/cold water. Never bleach. Hang dry, or tumble dry on low heat. Do not iron.