The Riley Porta-Potty is heavy duty quality and is sturdy enough to hold up to 250 lb.  It folds into a compact size and weighs 10 lb.  It uses a 10 or 30 gallon trash bag.  Set up dimensions are 21"h x 18"w x 16"d.  Folded flat dimensions are 24 1/2"l x 18"w x 3"d.