The product page is no longer available, so the following is quoted from the store blog: Using "back satin," a fabric often used for vintage military wear, these pants will develop a unique texture the more you wear them, allowing you to love them for a long time. Available in three easy-to-match standard colors: light beige, khaki green, and black. (Men's) 173cm / Size L (Women's) 163cm / Size M The waist has an adjustable drawstring and is fully elasticated. You can wear them comfortably without a belt. The hems can also be tightened with a drawstring, so no alterations are needed, making them recommended for women as well!