Large-Capacity School Backpack For Students Size:Large Dual-battery models ensure continuous operation

Dual-battery models ensure continuous operation for clearing multiple vehicles without interruption

it easily attaches to your clothing or keychain

Designed to focus powerful impact force precisely where needed

Stable without scratches: Protects furniture surfaces while staying firm

while maintaining stability

Large-Capacity School Backpack For Students Size:Large Dual-battery models ensure continuous operationFEATURES SCIENTIFIC SPINE PROTECTION: The backpack features a multi point pressure reduction design. The S type shoulder straps, balance chest buckle, and high elastic back pad work together to cushion shocks and distribute pressure evenly. The honeycomb mesh on the back enhances ventilation, and the three dimensional pressed breathable back pad quickly dissipates heat, ensuring the child's spine is well protected during long time wear. LARGE CAPACITY