My better half has put her back out carrying her laptop and associated bits and pieces in a messenger bag.
Her commute is 10 minute walk, 30 minute train and 10 minute cycle.
We are looking for a combo bag. Rucksack for the walking bit and pannier for the cycling bit. There’s an additional need for wheels as she occasional has to work elsewhere with lists of papers and stuff.
Any ideas ? Or are the wheels a step too far