Material: Ripstop nylon with a polyurethane coating #water-resistantDimensions: 15 long, 7.5 wide Lightweight, weighs as much as you put into bagReservoir capacity: Holds 1.5 liters of waterCell phone holder: 5 deep. Does NOT fit iPhone 6plus or any phone of equal size to itStorage: Main storage compartment holds all of the items that need to stay dry #water-resistant. There are 2 additional smaller compartments that zip shut, one at the top and one hidden along the side.Adjustable straps: chest strap, waist strap, shoulder strap (made of mesh material for comfort) & 3 straps to secure contents in and outside the bagFlag Nor Fail patch on left strap and FNF axeanchor patch on top flap