Don't buy this Bike Cave. Sure, it looks good and is nice and roomy for two adult bikes but the zip is a disaster. You can't zip the whole way round and the half that is supposed to zip open and closed, doesn't work. It really doesn't work. The two sides won't zip up so you end up with it flapping open in several places. This means wind, rain, local cats and foxes - everything can get in and thus the Bike Cave is rendered useless. I would not have bought this had I known how flimsy it is and how useless the zip is. They need to change the zip design IMMEDIATELY. It is not fit for purpose.