This 3D cartoon integrated ergonomic backpack is specially designed for elementary students, combining functionality, safety and fun elements in one perfect package Featuring scientific ergonomic design with integrated pressure-relief spine protection system that effectively distributes weight load and protects children's developing backs. The thickened breathable sponge back padding and S-curve shoulder straps ensure comfortable carrying even when fully loaded with books The backpack showcases three popular 3D cartoon patterns - spaceman, dinosaur and mermaid, created with eco-friendly inks and high-quality printing technology for vivid, durable designs that won't fade. Available in large size for grades 3-6 and small size for grades 1-2 to meet different age group requirements Multiple functional storage compartments include main compartment, front zippered pocket and side mesh pockets, allowing organized storage of textbooks, notebooks, pencil cases and water bottles. Made from waterproof and wear-resistant oxford fabric that is durable and easy to clean Safety features include reflective strips for enhanced visibility during night or rainy conditions, ensuring safer travel to and from school. All materials pass safety tests and are non-toxic and environmentally friendly This anti-stress spine protection school bag is not only a practical learning companion but also a fashionable accessory for kids to express their personality, making it the perfect back-to-school gift