Custom Logo Elementary School Backpack, Lightweight Student Backpack, Boys and Girls School Bag for Grades 1-6. Customizable Logo & Color: Supports silkscreen, heat transfer, rubber patch, metal logos and custom colors. Fully Waterproof Material: Made of waterproof oxford fabric for durability and weather resistance. Lightweight & Durable: Net weight 550g/660g with wear-resistant bottom and metal zippers. Multi-Size Options: Small (38x28x15cm) for grades 1-3 and Big (41x30x16cm) for grades 4-6. Fast Sample Service: Sample available within 5-7 working days for quality checking. Flexible Shipping: Sea (15-45 days), Air (3-7 days), or Express (5-7 days) delivery options. Low MOQ Acceptance: Small minimum order quantity accepted for custom orders. Professional OEM/ODM: Experienced designers available to handle AI artwork and custom needs.