Backpacks 1. Lightweight Version: PVC fabric, no shoulder strap anti-slip buckles, and hidden zipper pockets on the back, but with luggage straps! 2. Basic Version: PVC fabric, no upgraded anti-slip buckle, and hidden anti-theft bag and anti-theft keychain, with a USB charging port! 3. Upgraded version 2.0: PVC fabric, with anti-slip buckles on the shoulder straps and a hidden anti-theft bag on the back, no anti-theft keychain, but a USB charging port! The difference between the three versions of 1755 Color may vary slightly due to the color calibration of each individual monitor. Buyer show randomly selected some feedback from buyers, they all took photos with their mobile phones thanks forbuyer"'"s support. About Us Established in 2012, Guangzhou Yakai Business Co., Ltd. is located in Shiling Town, Huadu District, Guangzhou, China"'"s backpack capital, with convenient transportation. For nearly 10 years, our factory has occupied about 8000 square meters. Now we have more than 50 employees. Including 20 R&D technicians, it has a number of innovative patents. Our business is expanding in more than 105 countries and regions. The major markets are Asia, the Middle East, Africa, South America and other countries. We also strictly examine every process, including material procurement, production, packaging and transportation, to ensure the best quality of all products. Our company has brought together a group of high-quality professionals, through a full range of market research, to fully understand the needs of users. In 2017, we launched our EURCOOL globally.