Specifications: Backpack Colors:Dark Grey, White, Black Types: Backpack, Digital Product Storage Board Backpack Material:PVC laminating, Polyester fabric Closure:Lock+Zipper Size:about 32cm/12.60''x16cm/6.30''x48cm/18.90'' [Conversion: 1cm=0.3937 inch, 1inch=2.54 cm] Features: -Simple but fashion. -External USB charge function. Make it more convenient to charge your cell phone when travel or go out. -Anti-theft customs lock. Safer life. -It can store 15.6 inch laptop, iPad, phone, clothes, wallet, folding umbrella, etc. -Other Features: Metal aluminum handle. Night safety reflective stripe. Portable key buckle. Backpack straps' pocket to place your card. -Casual Easy style using for: Work, School, Going out, Travel, etc. -Best Match: Compliments various style dress and shoes in matching color. Digital product storage board. To store your digital product and make them organized. Note: -Due to different producing batches, product details might be a little different. If you minding the difference, please buy it carefully. -Please allow 1-3CM differs due to manual measurement. -Due to the different display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding.