Color: Blue Compact, lightweight hydration backpack designed for hands hydration, organized gear storage, and comfortable allday wear. Key benefits Stay hydrated on the move: builtin 2L hydration bladder with a portable drinking tube and a water outlet on the shoulder strap lets you drink without stopping, improving ride or run efficiency. Organized and ready for action: multiple internal compartments and a dedicated helmet holder keep gear accessible and secure. Protects gear in wet conditions: made from density waterproof nylon with strong abrasion resistance and splashproof performance to safeguard contents. Comfortable over long periods: ventilated back panel combines breathable mesh, thickened foam padding, and strength EVA for airflow and support; padded breathable shoulder straps reduce shoulder fatigue. Improved lowlight visibility: reflective strips on the front and back increase visibility during evening commutes. Product features Hydration system: 2 liter capacity hydration bladder included with portable drinking tube; shoulder strap water outlet for easy access. Storage: spacious internal layout with organized compartments and a dedicated helmet holder for portable helmet or accessory stowage. Materials and durability: durable nylon construction with density waterproof fabric offering abrasion resistance and splashproof protection. Comfort and fit: breathable mesh back panel, thickened foam padding, and strength EVA for ventilation and cushioning; padded breathable shoulder straps. Visibility: security reflective strips on front and back for nighttime reflection. Specifications Weight: 330 g Material: Nylon Dimensions: 29 x 10 x 41 cm (11.42 x 3.94 x 16.14 in) Colors available: Black, Blue, Red, Purple, Green Packing list 1 Backpack 1 Hydration Bladder (2 L) Practical use scenarios Cycling and mountain biking: hands hydration and helmet holder make it easy to ride longer without stopping. Trail running and hiking: lightweight design and ventilated back panel help reduce heat buildup and shoulder fatigue on long efforts. Urban commuting and short trips: organized compartments and splashproof fabric protect electronics and daily essentials in variable weather. Notes Product color may vary slightly from photos due to monitor differences. Allow a 1 to 2 cm tolerance in measurements because of manual measurement.