Timbuk2 Especial Cuatro Backpack Cordura^Mesh^Nylon Imported Dual side stretch pockets fit water bottles or U-lock Magnetic buckles on the flap for secure one-handed accessibility Oversized flap and buckles allow for everything, even the kitchen sink Magnetic buckles on the flap for secure one-handed accessibility Oversized flap and buckles allow for everything, even the kitchen sink Backpack straps made from high density foam and mesh for venting Ventilated back panel to give your back breathing room