Great dog house - my dog LOVES it!  Very easy to assemble and I am a 135 lb 59 yr old woman.  The only issue I had - I ordered a medium dog house but received a medium/large dog house.  Dog house size is fine but I also ordered the insulation kit in medium - it was way too small.  Looked at the website and the insulation kit is available in both medium and large sizes.  Apparently I need the size Large insulation kit - but I don't believe there was any way for me to know that when I ordered.