Mine would practically shut down my washing machine as I never could balance out the weight and it got vicious, causing machine to make a lot of racket and dance around on the floor and it's very heavy duty.
Had to stop Tibbe from using it because of that. Scared my washer couldn't take it and never could get enough towels, etc., to balance it without adding a bunch of them and that was a big hassle as I never had to wash that many - always had to rewash a bunch of clean ones. I guess my washing machine is too old to handle it or something. I hate it, too, as Tibbe loved that bed!!!!!!!!!! It was the best bed he ever had but just too hard on my washing machine.