Makino Kid's Back to School Waterproof Backpack Shoulders Bag 20L 5561 Material: 100% Nylon Waterproof, durable, adjustable shoulder straps, water repellent and winkle free, designed specially for kids Size: 9.06"x4.72"x14.17"(LxWxH), capacity: 20L Scientific and reasonable pocket and lining design will let your goods lay in the bag systematically Air Flow System: The back and hip padding made of durable open-cell foam with lumbar pad and molded channels provides maximum comfort and allows airflow Perfect for outdoor activities like hiking, climbing, camping, running, jogging, walking, cycling, fishing, travel, vacation, beach wear, can be also used as a student bag