The Backpack is constructed with waterproof 900D .
Dimension: 40L, Main Compartment 20″(H) x 16″(W) x 7″(D) Front Part 16″(H) x 11″(W) x 2″(D)
Non-slip breathable shoulder straps
Shipping weight: 3.15lbs.
There are several side straps that could potentially be used for holding a water bladder.