Dimensions: 9.8"W x 14.6"H x 4.7"D. It is a mini backpack and it is only 10L. Some customer even says tiny. It fits for small person. Any one who mind the size,pls choose a larger one. Main pocket: fit for iPad4, 10" tablet, Side Pockets: can fit 500ml bottle Front pocket: can fit 5.7" phone. High-intensity military-style specifications nylon, scratch-resistant, Not easy to fade.Water-resistance, to ensure the strength of the product while ensuring long-term use in wet environments, or will not rot after the invasion of water