Ann-I purchased a BuzzPOD to try for my son, who is in his late 20s, and myself. We both snore, and my son particularly is a habitual back sleeper. We found the device to be more comfortable, less disruptive, and easier to use than another electronic device we had tried (which went around the neck), and it was very effective in preventing us from sleeping on our backs. In fact, when my son went in for a repeat overnight sleep test after a few weeks of using the BuzzPOD he was no longer recorded as sleeping on his back, and he was also no longer recorded as having sleep apnoea. It seemed to me that the BuzzPOD had helped train him out of sleeping on his back (he wasn't wearing it when he had the sleep test). We've also tried a few inflatable pillows and bumpers and have found them less effective than this device. We found Michael to be helpful and genuinely interested in the results achieved with his product.