Carhartt Single-Compartment 27L Laptop Backpack. No nonsense and ready for daily life on or off the jobsite. The Duravax-base is ultra-durable where you need it 1200-denier polyester with Rain Defender durable water repellent and Duravax abrasion resistant base Pack features large main compartment with dedicated 15-inch laptop sleeve and tablet sleeve and two exterior mesh pockets Front zippered organization compartment. Padded air mesh back panel and contour fit shoulder straps Dimensions: 12” X 18” X 9.5” Volume: 27L