My English pointer is lean & has a thin coat, so he gets cold at night.  Tired of having him jump into bed with us, we started putting a fleece blanket on him at bed time.  He loves that, but manages to have it come off during the night, so he barks to us to put it back on...also no good.  This bed is the solution.  He can get in by himself to be covered, or lay on top of it.  He dives into this at bed time & loves it.  He's about 55 lbs and we got the XL which is huge.  Could fit two of him in there.  It's also very well made so I expect it will last a long time & if it does wear out will definitely buy another so the wife & I can continue sleeping through the night without having to evict him from our bed room.