Waterproof inner bag The waterproof inner bag is included equipped with the URBAN ABS top case. However, an additional inner bag can be purchased later as needed. Waterproof inner bag replacement. Included in delivery 1 × Waterproof inner bag Details Material: 210D polyamide Surface: PU coated Color: black TotaL Weight: appr.0.1 kg / appr.0.3 lb Total Volume: 29.0 L Installation Instructions