Durable waterproof backpack with smart organization and secure design - Material and hardware: Made of high-quality waterproof polyester with sturdy zippers, metal sliders and rope pullers for smooth, reliable opening and closing. Nylon lining and a breathable mesh back panel add comfort and durability. - Age and size: Suitable for ages 3+ years. Dimensions are 16.5 inches long x 5.5 inches wide x 11.8 inches high (42 x 14 x 30 cm). - Large capacity and security: Interior main compartment includes 1 zipper pocket, an anti-theft design for security, 1 laptop sleeve, and 3 open pockets to organize a phone or small items. Exterior features 2 side pockets for a water bottle and an umbrella, plus 1 front zipper pocket for easy access to essentials. - Design and versatility: Modern style with functional design that pairs well with various outfits. Available in colors and styles to reflect personal taste, built to be versatile for everyday use. - Practical use scenarios: - School or daycare: carries books, a tablet, and small items while keeping them organized and secure. - Day trips or travel: fits water bottle, umbrella, snacks, and electronics with quick-access front pocket. - Everyday commuting: durable companion for work or campus, providing organized storage and comfortable wear. This backpack delivers practical storage, reliable performance, and a clean, modern look for everyday use.