Showers Pass Reflective Torch Crew Sock 27% Merino Wool 27% Acrylic 23% Polyester 18% Nylon 3% Lycra, 2% Spandex Imported The Showers Pass Torch Socks feature the cutting edge in 3M Scotchlite Reflective Material coating technology that offers 4-way stretch for comfort and durability with 500 candle power reflectivity. Constructed with a Wool blend of materials, fibers include Merino Wool, Acrylic, Polyester, Nylon, Lycra and Spandex for optimal comfort and durability. This unique blend of fibers offers the perfect amount of breathability, stretch, compression and durability. Zone padded thicker heal and toe area offer reinforced protection against wear, while a thinner knit pattern at the top of the foot (tongue zone) offers a trim anatomical fit for comfort in a cycling shoe. The engineered compression pattern at the arch and Achilles boosts circulation while offering supportive comfort.