Constructed with robust, waterproof canvas and lightweight polyester, this comprehensive 16.5x12.6x5.5-inch school backpack set (recommended for users aged 7 and up) offers unparalleled durability and practicality. Featuring smooth zippers, machine washability, and a versatile 3-in-1 design that includes a backpack, insulated lunch bag, and pencil bag, it provides ample space for a 15-inch laptop and all your daily essentials. With widened, padded shoulder straps for comfort and stylish design, it's ideal for students, professionals, and anyone seeking a versatile daypack for school, travel, and various outdoor activities.