15, 30 or 45 litre capacity waterproof travel bag.Key Features• Made from a durable 600D Polyester• Weather-proof closure system• Water-proof fully taped seams• Padded shoulder strap• Perfect riding companion for any trip• Unique Oxford safety attachment DimensionsOL311: 52cm (H) x 25cm diameterOL312: 58cm (H) x 32cm diameterOL313: 63cm (H) x 35cm diameter