This backpack is made of Oxford cloth. Professional breathable spine protection design, protecting children’s health, closely fitting the back, in line with ergonomic design. Professional waterproof bag with waterproof coating design, not easy to penetrate, and good water resistance. The interlayer is designed for better storage of books. Suitable for companies, schools, and other occasions. The page price does not include printing. We can customize many items suitable for school offices. Please feel free to inquire..1 location includes the shipping cost to US. Orders of 220 pieces or greater are eligible for sea shipping. 100% guarantee for quality. Rush Service.