Our dog Chinook is large, very, very large. We have searched high and low for a bed to fit him to no avail. Lucky for us we had a futon cushion that was no longer in use and so we cut it half. I sewed up one half of the futon with twine and then I made a removable cover out of a full flat sheet. The whole project took about an hour and a half and now our dog has a comfortable place to sleep. If you don’t have a futon cushion a good place to find one for cheap, or even free would be local ads or Craigslist.