I bought two of these beds, one for each of frenchtons who love being under blankets. I got the size large which is pretty big for them but if they ever decide to cuddle they would both fit in one. Some people had mentioned in reviews that they couldn't put the support tube in because the hole was sewn shut. I ordered a blue and a brown and the blue was sewn shut but not the brown. So we have on with a tube and one without, the tube doesn't hold the blanket up to form en entrance but does make it a bit easier for the dogs to get in, but they also like to just lie on top of the tubeless one and not the one with the tube. The beds seem fairly durable, these dogs wreck things very easily and so far the only problems would be the fluffy lining is shedding a bit and they were too eager to get a bone out from under the blanket so they pulled it through the seam (but easily fixable).