This product is unsafe.  First, the bearing in the swing bar popped out.  I had to replace the washers with larger ones to hold the bearings in place.  Secondly, there are two tiny pieces of wood in the center (one on the back bar and one on  the front) to support the seat.  These pieces are screwed into the front and back bar with screws that only go in about 1/2 inch.  The back one came off when 2 adults sat on it.  I placed longer screws into these pieces.  I still do not trust this item with any more weight than one adult or two small children.