High Quality Material: Made of high quality waterproof nylon material. The lightweight and waterproof properties ensure that the contents remain dry, even during heavy rain, while the double zipper provides smooth and easy access. Suitable for ages 3+ Unique Design: This backpack features beloved superhero elements from popular superhero movie series, inspiring children to be brave and strong like their favorite superheroes. It is a great choice for personal use or as a gift, and delights children with its captivating design. Ergonomic Design: The backpack is equipped with adjustable and relieving shoulder straps designed with a stress-reducing sponge. This design ensures that users do not experience pain in their shoulders even when carrying heavy objects, and both the shoulder strap and side pockets are equipped with reflective strips. These high-intensity reflective materials emit bright light in dim environments, alerting passing vehicles and greatly improving children's safety when outdoors. Perfect Gift for Various Occasions: This children's school backpack is both beautiful and practical, making it an ideal gift for children on occasions such as back to school, New Year, Children's Day, Christmas, Easter, Thanksgiving and birthdays. Choking Hazard Small Parts.