In some cases, snoring, SDB or OSA is positional. In other words, the obstructive events only occur while sleeping supine (on the back). The Sleep Noodle sleep positioning belt is exactly what it sounds like. It consists of a neoprene belt with a small bumper in the back, which prevents a person from rolling onto their back in their sleep. It has been found to be extremely effective at keeping people on their sides or their bellies.