Oil Waxed Canvas&Crazy Horse Leather Imported Material: Waterproof Waxed Canvas & Vintage Crazy Horse Leather Trim,Waxed Canvas Features :Natural Fiber: Our canvas is made of pure cotton, crafted with a tight double-knit weave. We then stonewash it, which gives the surface a one-of-a-kind, vintage-inspired surface.Durable: The high density canvas we use is strong, hard-wearing, scratch-resistant, and maintains its color well. Water Resistant: After the waxing treatment, the canvas surface is left with water resisting features. 4-in-1 Messenger Backpack with USB Charging Port, Theft-proof locking zipper pocket,Anti-shedding high load hook，Clean sewing Structure: Large capacity design, ideal for office supplies.2 external pockets hidden under the cover,1 pocket behind the bag,Multiple open pockets inside. Dimension:15.3”L x 11.4” H x 2.8” W inches Weight: 2.2 lb Vintage look:Unique design, both business and leisure style.Applications:Business,School,Sports,Travel, Hiking, Climbing