This backpack is lightweight and breathable, great choice for_cycling, running, marathon, hiking, climbing, and other outdoor activities.

Features:
Made from oxford fabric, lightweight and tear-resistant.
Zippered front pocket for phones, towels, and valuables; mesh pocket for sunglasses and tools.
Bladder compartment can hold a 2 liter water bladder and keep you hydrated. (Water bladder is not included)
Breathable mesh back panel keeps you cool and comfortable.
Adjustable chest straps and shoulder straps provide a snug fit and reduce bounce.
Reflective strips increase visibility and safety at night.
Suitable for cycling, running, marathon, hiking, climbing, and other outdoor activities.

Specifications:
Material: Oxford fabric
Dimension: 26 * 5 * 40cm / 10.2 * 2.0 * 15.7in
Weight: 195g / 6.9oz

Package List:
1 * Cycling Hydration Backpack