The B and W International B3 Pannier Bag and a bike the absolute dream team. With an inner volume of 35 L and even up to 48 L when left open this spacious bag can fit anything you need for an extended trip or competition. It is also the ideal daily helper When shopping by bike even heavy items can be easily stored. The B3 bag’s roller function and smooth-running casters make it easy to transport even when full and not on a bike.