12-ounce 100%-ring spun cotton duck - 4.5-ounce 100% cotton flannel lining - Loose fit features a full seat and thigh - Sits slightly above the waist - Multiple tool and utility pockets - Left leg hammer loop - Stronger sewn-on-seam belt loops - Two reinforced back pockets - 19" straight leg openings fit over work boots - Number of belt loops varies based on size -