A standard SleepPro is considerably cheaper than the custom SleepPro.
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.
The custom SleepPro has thinner walls and is less bulky so you aren’t as aware of it when you wear it.
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.