This medium size backpack has plenty of room with a big inner pocket, separate section for a 15'' laptop, front pocket, and a hidden pocket at the back for valuables. The bag is made out of a water-resistant material, which means your all-over print designs will stay crisp and fresh no matter the weather! 100% polyester Fabric weight: 9 oz./yd.² (305 g/m²) Dimensions: H 16⅛" (41cm), W 12¼" (31cm), D 3⅞" (10cm) Capacity: 4 gallons (15l) Maximum weight limit: 44lbs (20kg) Water-resistant material Large inside pocket with a separate compartment for a 15” laptop, front pocket with a zipper, and a hidden pocket with zipper on the back of the bag Top zipper has 2 sliders with zipper pullers Silky lining, piped inside hems, and a soft mesh back Padded ergonomic bag straps from polyester with plastic strap regulators Printed, cut, and hand-sewn by our expert in-house team