The bed is thinner than I expected - thinner than it looks in the picture - and probably does not provide much insulation from the ground if being used outdoors. The outer cover seems rugged enough and certainly waterproof. The curled fleece top is also a bit thin but obviously snuggley as it was immediately co-opted and snuggled on with great pleasure. My main concern was the packaging. Also thin and had been snagged in a couple of places in transit, allowing the fleece to poke through. Even so it had an alarming bright yellow sticker warning that the contents were 'under pressure' and to 'open as soon as received' but not to use a knife or any sharp object for that purpose. My UPS delivery guy queried if he was delivering something explosive and I agree that would definitely be the impression given. Not sure why as there was nothing even vaguely explosive or combustible in the pack so the warning sign is OTT.