Received the Tranquility Pro in the mailbox the day after ordering which was brilliant as I was already concerned I was keeping my partner awake every night. Product is well constructed, it cane with support materials, money back guarantee and link to video how to fit the mouthpiece. Have had to use this mouth piece for 4 nights before it felt comfortable and immediately felt better rested after using the device. Would highly recommend to anyone with mild to medium snoring. I have never been a snorer and opted for this as I started snoring during COVID lockdowns and being indoors, have dry mouth and nasal areas. This really works people. Worth giving this a try.