Blackburn central rear pannier bagthis water resistant blackburn central rear pannier bag is not only highly technical and well considered it also has a generous 13 litre capacity the rear pannier is interlock compatible comes with a rain cover and the interior is very well organised featureslaptop sleeveincredibly organised13 litre capacityrain coverinterlock compatiblewater resistanttechnologiesinterlock compatible one key to protect them all thats the idea behind blackburns excl