Our brand story Brand value: VINMEN is a young team dedicated to outdoor sports, health, business office, home life and other products. We focus on providing high -quality products for customers, and continuously improve products according to customer feedback to create luxury high -end brands and allow you to enjoy a happy shopping experience. Features of this product: With external built-in USB charging interface and internal built-in charging cable, this USB backpack provides you a more convenient way to charge your phone while walking. Please note that this backpack does not power itself, the USB charging port only provides convenient charging access。 separate laptop compartment can hold 15.6in laptops and laptops of the following sizes. Four-layer design, reasonable storage of things needed for daily travel, specially designed for business people. Let you travel as you wish. Professional service: Your purchase and feedback are the motivation to support our brand and products to enhance competitiveness. If you have any questions about our products, please contact us at any time. After receiving the product, if you have any questions about the use of methods and product performance, we will provide you with professional and caring sales services. Product safety exemption statement: We do not bear any responsibility of abuse of this product or any other product. All of our products have been widely tested to meet strict and strict QC standards.