Permabag are very good.
I have used an indoor version in a garage for a Classic Rover Mini since it was new in 2000 and the car still looks and smells new with no adverse effects. With permabag you need to use dessicant canisters which do need recharging in an oven every 6 months or so.
Permabag isnt very user friendly as its more of long term solution andis a faff to use for regular use. My advice is buy the next version up as it can be quite tight!
For those who dont know permabag its basically a huge air tight bag made if tough air tight material with a huge zip.
