Picture posting is enabled for all :)
height? TeGee recommends 24 inches but on our allotment I would say they are no more than about a foot above ground.
Having spent many hours weeding various sorts of paths (compacted soil, wood chips, both of which just get messy and weedy, membrane and wood chips on top gets blown away and birds love it, I have ended up with paving stones, 2ft wide with membrane underneath. That way you don’t spend more time weeding the paths then the beds! My beds are just edged with split scaffolding boards atm so only about 6” high, but they have rotted much more quickly than my old pallet ones did and with the paving I’m thinking of not bothering to replace them as they crumble