You have to spend fair money on them for them to not fail after a single season.
Easiest would be to go to the folks who sold you the furniture and look at what they offer. Getting third party stuff that fits well isn't super easy either, unless you get custom stuff, which is £££
Does anyone have any recos for garden furniture covers. Or any don't buys?
Optimistically bought our new outdoor seating too early and want to limit the rain damage.