The new Topeak Pannier DryBag is constructed from a tough, sonically welded and seamed sealed waterproof material. A watertight roll-top closure provides maximum protection from trail dust, road spray and nasty wet weather. Topeak s new Handle Loc system quickly and securely attaches the pannier to the rack and is quickly and securely attaches the pannier to the rack and is quickly removed with a simple upward press & pull of the top mounted carry handle.16L Specification:Capacity: 16L (single bag)Material: Waterproof fabric sonically welded seamsBag Attachment: Handle Loc system, Fits racks ø8/10/12/16mmAdded Features: Roll-top closure, Shoulder strap, Reflective printingSize: 45 x 26 x 15 / 17.7 x 10.2 x 5.9 (16L / Closure)Weight: 700g / 1.54lb (16L)24L Specification:Capacity: 24L (single bag)Material: Waterproof fabric sonically welded seamsBag Attachment: Handle Loc system, Fits racks ø8/10/12/16mmAdded Features: Roll-top closure, Shoulder strap, Reflective printingSize: 47 x 31