The sleep device can be used with all brands of mattresses and is compatible with a wide variety of mattresses including spring, latex, foam, and memory foam. Place the sleep device directly under the mattress (between the mattress and the bed slats or box spring).
You can also place the sleep device between your mattress and mattress topper or pad. If you can feel the device when lying in place it between the mattress and the bed frame.
Note: the sleep device has been tested with mattress thicknesses of between 10 to 40 cm. It is not recommended for use with waterbeds and airbeds.