A replacement outer cover, supplied with the Lay‑Z‑Spa® Zurich. The EnergySense™ cover fits over the inflatable liner and is securely fastened to the lid Lay‑Z‑Spa® using integrated clips. This thermal cover helps to protect the liner from damage and insulate your Lay‑Z‑Spa® providing up to 40% more energy‑efficient than comparable inflatable hot tubs, keeping the heat in for longer.