WaveSpa Round Thermal Efficient Protective Inflatable CoverThe WaveSpa Round Thermal Efficient Protective Inflatable Cover is the most straightforward upgrade any round WaveSpa owner can make to reduce heat loss, lower chemical usage, and keep their spa protected between sessions, available as a round hot tub thermal cover UK option in either 4 person at 140 x 140cm or 6 person at 166 x 166cm to match both standard round WaveSpa configurations precisely. Inflating and deflating through a 25mm valve takes only