This is a brand new pair of gray/green Thorlos Extreme Weather socks. They are in the original packaging and have never been worn. These are a high quality sock brand that will surely keep your feet happy when you are out on the trail. Unbelievable quality with great longevity. Made in the USA. Men's US size: 9 -12.5 (or) Women's US size: 10.5 -13.0