Features: Multi-compartments provide separate spaces for computer, files, wallet, clothes, power bank, cellphones, clothes, etc. Dry and wet separation design makes it more practical when travelling or in rainy days. Thicken padded back and waist mesh strap for maximum breathability and comfort. Side elastic bags for fixing your helmet, easy to take it to anywhere. Hydration insulation layer and pipe outlet on the shoulder strap make drinking more convenient. Fully adjustable shoulder, chest and waist straps for a custom fit. Multiple suspension system, you can hang the key and other things that need to take away. Perfect choice for running, cycling, mountaineering, hiking, fishing, cross-country and other outdoor activities. Note: Water bladder and bag are sold separately. Helmet is NOT included.