Built to handle what you throw at it with a durable 600D Polyester exterior and a 600D Polyester sublimated insert to match, complemented with heavy duty matte plastic hardware and water repellent zipper seams, so you can take it on your daily pursuits knowing this bag will hold up. Specifications * 600D Polyester w/ water resistant coating * 5 x 11 x 17 (Shell) 5 x 11 x 26.5 (Roll-top open) * 15L - 18L Features * Modular Insert Design * Machine Washable Inserts (cold + air dry recommended) * Large Main carry-all compartment * Quick Access Front Pocket with coated polyester * Padded Back Laptop Sleeve with waterproof zipper taping - Fits most 15” laptops * Side Water Bottle / Phone Pocket * Dual Tension Straps * Top Carry Handle * Extra Wide Webbing and Hardware for style and security * Padded Shoulder Straps for comfort