97% cotton 3% spandex. Made in USA. Machine wash. Zip fly with button closure. 7-pocket styling includes two cargo flap pockets. Rigid denim fabric. 21 at the knee and 21 at the leg opening. NSF-WP204. 9597-BLD. Based out of California, NSF has caught the eye of many. With their clean design and boyish charm, NSF is recognized for its relaxed, modern style looks.