This Oval Lay-Z-Spa® inflatable insulating lid is compatible with Mauritius Airjet™. It is a direct replacement for the lid supplied with your Lay-Z-Spa® and is an essential part of hot tub insulation for better energy efficiency and reducing hot tub running costs by retaining heat for longer.\n\nThe Lay-Z-Spa® insulated hot tub lid fits inside the clip-on top cover and creates a protective thermal insulation barrier that reduces heat loss, maintains the water temperature for longer when not in use and helps to heat the hot tub water quicker.\n\nImportant Information Please Note: The replacement will be smaller than the original when you initially inflate it. The inflatable lid is made from a vinyl material that can take approximately 6 - 8 weeks to fully expand. The outside air temperature along with the temperature of the water in the spa can help speed this up. Once fully expanded, the lid will look the same as before.