[Grimmy]

Collonil's Nanopro and Woly's Wet Blocker are recommendable universally for most leather types and textile materials in shoes. Their prices (depending on the shop of course) and moisture protection capabilities are pretty equal IMO so it's up to oneself to decide which one is better. Both are very good.

I've noticed a little side effect with the nanotech sprays tho.. at least with me they manage to make some leather shoes and trainers squeak annoyingly loud unlike the shoes did originally while with non-nanotech sprays like Woly Protector 3x3 there's never been such an issue. Maybe it's just me hearing voices in my head.