The perfect all season commuting bag. Same dimensions as the Satchel Pannier, with the addition of Inertia's bag-in-a-bag watertight system. Inner roll top bag is fully heat sealed to keep out water and grime. A super heavy-duty truck tarp flap adds further weather protection. HDPE frame sheets support the back and bottom connected by a load strap like on the Metro series . Reflective strip can be moved so that it always faces the back of the bike Adjustable top hooks and a bungee suspension provide a solid custom fit to any rack. D-rings accommodate an optional shoulder strap sold separately . Sold single-sided. 14 x 5.5 x 13 , 1092 cu in 14 x 5.5 x 13, 1092 cu in Bag-in-a-bag watertight system Inner roll top bag is fully heat sealed to keep out water and grime Super heavy-duty truck tarp flap adds further weather protection Movable reflective strips; Adjustable top hooks and a bungee suspension