The GIVI T507 is a 45L waterproof inner bag designed for motorcycle luggage. It features a roll-down closure system for complete watertightness and an air bleed valve. The bag can be used internally within Givi Trekker Outback 48 Liter OBK48A OBK48B cases, or externally attached to a carrier, laterally, or on the top case lid or as a saddle bag using the included elastic straps. Its dimensions are 26 x 45 x 33 cm (17.7" L x 11" W x 13" H).