The reviews of other users I can not understand that. Despite the many negative reviews I ordered this product and received promptly. If the tire parts are tightly closed, they do not fall apart when the tire falls initially on the floor. Here's a little tip for all inexperienced: on YouTube there is a video tutorial for Hula Hoop. The individual massage nubs I initially not appropriate to prevent the bruises that were described by users. Best to wait until you're back at the right hula hoop feeling it and the tires with the belly can revolve. I do not regret buying, but do rejoice in the recovered hula hoop feeling. Have Fun!