MSpa Round Thermal Cover (for Oslo)Intended to be used with the MSpa Oslo hot tub Tailored Fit: Made specifically to fit the MSpa OSLO model snugly, providing unbeatable protection against the elements Optimal Insulation: Designed with a special slot at the connection pipe, this cover prevents cold air from infiltrating the interior to maintain the ideal heated temperature of your spa for a truly ambient and relaxing experience Secure and Snug: Featuring a tightening rope and buckle