Outdoor socks with the combination of comfort, durability and sustainability are a rarity. But these cotton / polypropylene KS sport hiking socks achieve what is most desired in a hiking sock, long lasting and comfortable. These walking socks are made out of polypropylene, a material notorious for its durability and strength. These walking socks have a high polypropylene content, giving them the ability to last longer in an anti-abrasion test. These socks will be on your feet and in your sock drawer for quite some time. The added cotton content enhances comfort and increases the breathability of these hiking socks. Cotton also makes this a great all year round pair of socks, hiking socks for the summer and the winter. There is terry cushioning applied at the heel of the sock to give cushioning on hard terrain. This pair of hiking socks are available to purchase in a one pair pack and can be bought in up to 3 sizes. They are made from 44% cotton 38% polypropylene 15% polyamide 3% elastane and they are safely machine washable.