The materials applied in Sofie school backpack are guaranteed to has strong wear and tear performance as well as leakage tightness, to provide the best longevity for application. With an integrated dust-proof cap, it ensures maximum safety
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Many advanced technologies are adopted in the production of Sofie youth school backpacks. New technologies in fiber materials, textile dyeing technology, and 3D composite knitting have significantly optimized the overall properties of the product. It is resistant to both high and low temperatures
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In the whole production of Sofie school backpack, the process is highly efficient with the help of advanced machines, such as CNC machine, mold shaping, and stamping machine. It has at least a 5-year service life
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Sofie youth school backpacks is manufactured by our production team using multi-colored elements and manual techniques. This method allows the team to control the quality at every stage of production. Requiring no pumping, squeezing, or filling, it makes the water directly go through all the way to your mouth
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Sofie school backpack is manufactured by going through the following processes: raw material preparation, plastication, mixing, formation, vulcanization, and inspection, and packaging or assembly. It is specially designed for outdoor enthusiasts
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youth school backpacks featured better school backpack properties, as well as possessed school backpack features. It is BPA free and can reach the Drinking Water Standards of USEPA