Riese & Müller Multitinker2 Cargo Kit

Two 42-litre bags for the rear platform — for the days when the Multitinker2 is doing the shopping rather than the school run.

The fabric sheds rain, the base is reinforced, and the roll-top closes down over whatever height the load turns out to be. Inside, pockets stop smaller things migrating to the bottom, and a strap holds a bottle upright. They fix on with hook-and-loop straps, so they go on and come off without tools.

The useful part is what happens when they are empty: compression straps pull them flat against the frame, leaving the carrier clear for a passenger to sit on the back.