This item has been opened once for inspection and photography, but it is a new, unused item. Color: PINK Size: S The following is quoted from the web page: ■ BRING underwear combines the smooth feel and odor resistance, temperature regulation of merino wool and BRING Material recycled polyester to create underwear with a meltingly soft touch. It's free size, so it's surprisingly genderless for underwear. Moreover, it's reversible front and back. Some people can wear it for four days because of the front/back x inside/outside design. It's washable wool, so it's easy to maintain, and it dries easily because it's a polyester blend. There are two types to choose from depending on the wool content. 70/30 is 70% wool and 30% recycled polyester. It's suitable for situations with relatively low activity, such as mountain climbing. 50/50 is 50% wool and 50% recycled polyester. It's suitable for high-activity activities, such as running in the mountains for long periods.