• LARGE VOLUME: In-built 2-liter hydration bladder, extra-wide screw cap for easy re-filling, wide enough to insert standard ice-cubes, equipped with 35 Inch quick-release, soft mouth-piece drinking tube. 
• FIRST-CLASS MATERIAL: EVA material for the bladder, 35-inch quick-release, soft mouth-piece drinking tube convenient to drink, waterproof& anti-scratch nylon fabric for ultimate durability.
• ULTIMATE COMFORT: Breathable & airflow system to keep your back cool and dry, soft cushions on the rear of the backpack to comfort your back, adjustable shoulder/breast straps to perfectly fit your body.
• SAFETY IN MIND: Reflective safety tabs and reflective logo for high-visibility in low-light environments, keep you safe and hydrated for most extreme environments & weather conditions, use food-grade material for the bladder.

Backpack specifications: 43*28*8CM

Drinking water bag specifications: 38.5*16.5CM