the wheels are terrible. I this cot because air beds are for the young and the air beds pop easily. the instructions for this folding bed are bad, no words just pictures and bad pictures, I think the instructions supposed to cover multiple cot models. I got it assembled and the latch plastic thing that holds the bed in closed position it a super tight fit, I look at the instructions and it has a pic of the latch with a circle and line thru it, like don't use it, why include a part I'm not supposed to use. I used it. It might kill me?!?