Forget

[insomnia01]

Is the givi ring mount 3.5 hard bag. Theres a ring that you get for each bike brand that goes on the petrol cap surround. The bag turns on and locks then release lever lets it go again.
Once you have mount that stays on bike you can buy several size bags. Mine the hard formed days bag 3.5litre.
I think the other sizes are about 11litre and 18litre approx.

cheers Mossy