Good to know- Save on energy bills with this insulated cover - it reduces heat loss from your Lay-Z-Spa hot tub (sold separately), so you won't have to reheat it as often- The thermal insulation helps the water heat up faster, so you can enjoy your hot tub sooner- You don't need to worry about rain or sunshine damaging your tub - the cover's completely waterproof and UV-resistant- It fits any inflatable Lay-Z-Spa hot tub up to 216 cm in diameter- The adjustable strap and safety clips make for a snug fit and will keep the cover secure, even when it's windy outside- It has a door with zip to neatly hide the built-in pump, and you can easily remove it for external pumps