Carhartt WIP Single Knee Pant Denim Black Stone WashedCarhartt WIP Single Knee Pant Denim Black Stone Washed The Carhartt WIP Single Knee Pant WIP's signature work pant with a reinforced single layer knee panel for added durability. Relaxed straight fit that sits comfortable all day without looking baggy. Durable cotton construction, bartack reinforcement at stress points, and the Square Label at the back pocket. A modern take on the classic work pant that's become a skateboard and streetwear staple.