This Men’s merino and Polyester blend midweight sock offers comfort, warmth and versatility.Features:- Height: Over Calf- CUSHION: MediumSpecifications:- Contents: 40% Merino Wool, 40% Polyester,10% Nylon, 10% Ea. LYCRA ®Technology:Merino wool:- Merino wool is a finely crimped and soft wool with staples (fibre lengths) that are commonly 65 100 mm (2.5 4 inches) long and less than 24 microns in diameter. The core of a merino fibre is hydrophilic (water retaining), and is breathable. The fine micron diameter ensures it feels soft and comfortable next to the skin. Merino has the ability to help keep the foot warm in winter and cool in summer.