Dear Geltman and Ladys, thanks you visit our products, if you have any question please contact us , we do for you . . the main bag size is 42cm*32cm*14cm ,the bag include the should belt full coverd by PVC , transparent design , engineer can put computer , tool in the bag when between and in clean room area ,and easy to find what you need through the bag the strap is very strong so we can put 20kg tool in it the engineer backpack that is convenient to bring into a clean room (CR),because the belt and bag full cove by antistatic material , so it's allowed to bring into the very stick clean room the bag with an antistatic film. Protects important data from static electricity Because it is transparent, you can check the contents immediately, which is convenient! Since the zipper extends to the side, you can easily store PCs, laptops, tablets, iPads, A4 files, notebooks, tools, etc.! Thank you for visiting our store. If you have any questions, please contact us. if you need more bag and need more discoun, please contact us .thanks UPC 762715652508 Color One Piece White Large Pattern Solid Brand Name QIAOLIANQIAO Model Name Tool Bag-33444 Shell Type Soft Shell Strap Type Shoulder Strap Unit Count 1 Piece School Type High School Manufacturer QIAOLIANQIAO Style Number rex89-errf Material Type Plastic Item Type Name empty bag Outer Material Polyvinyl Chloride Storage Volume 1 Centiliters Number of Items 1 Number Of Pockets 2 Lining Description Nylon Pocket Description Utility Pocket Included Components empty bag Apparel Closure Type Zipper Age Range Description Adult Embellishment Feature Cord Water Resistance Level Waterproof Item Dimensions D x W x H 5.51 D x 12.6 W x 16.54 H Product Care Instructions Hand Wash Only Compatible Device Size Maximum 16.54 Inches