Price: A standard SleepPro is considerably cheaper than the custom SleepPro. Fit: The standard SleepPro is a “boil-and-bite” mouthpiece, which means you put a thermo-plastic mould in hot water and then bite into it so that it takes the shape of your teeth; this is not customised specifically to your teeth. The custom SleepPro is hand-made in a laboratory using a dental impression kit. The device is made using a near perfect impression of your teeth so fits more snugly. Size: The custom SleepPro has thinner walls and is less bulky so you aren’t as aware of it when you wear it. Grip: The SleepPro standard grips mainly the front teeth, whereas a custom SleepPro grips all the teeth. This helps it to sit more securely and comfortably on your teeth while you are asleep.