I very much doubt the claim that it will fit +4 or 4/4 2 sweaters - I doubt that it will fit +4 or 4/4 jumpers or any other form of knitwear!
But allowing for 'sweaters' to be a typo then if anyone is interested they should go, with their car, to ensure it fits. Otherwise you could be left with an item of no use to you, and hard to find a buyer at anything like the price this one is asking!
Quentin