For double shifts or 14-hour days, these jeans can stand up to almost any job. They're made of Carhartt's most-durable, abrasion-resistant denim with Rugged Flex technology for comfortable movement.. 12-ounce, 85/14/1 cotton/poly/spandex denim. Rugged Flex durable stretch technology for ease of movement. Sits slightly below the waist. Comfortable fit through the seat and thigh with more room to move. Stronger sewn-on seam belt loops. Straight leg opening fits over boots. Carhartt label sewn on right rear pocket. Relaxed fit