Kimlee Internal Frame Pack Waterproof Hiking Daypack Camping Backpack Trekking Outdoor Gear Black Color: Black Size: L15.75*W23.62*H11.81 inches 42L High-capacity professional backpack for excursions or long trips, designed to be lightweight and functionally versatile, weight only 2.4 pounds Made of 210D high tenacity nylon, with SBS zippers, high quality and durable, better ventilation not easy to deformation. With waterproof cover can protect your stuff from the rain, have big room for a laptop / notebook up to 13.3 Inch