Givi CRM101 Corium 18L Rucksack/Seat BagRucksack which can also be used as a saddle bag, 18 ltr. With its classic design, it is particularly suitable for retro style bikes or caf racers. Materials High tenacity 1200D W R coarse polyester Dark brown and black PU. As standard Retractable shoulder straps to allow use as a saddle bag 4 straps for fastening to saddle Waterproof roll top closure system Removable waterproof inner bag (resistant to heavy rain)