The weight of a ThermoSpas cover varies depending on the hot tub model but is durable, sturdy and easy to remove and put into place. If the hot tub cover weight or maneuverability is a concern, ThermoSpas offers three different lift systems to make covering and uncovering the hot tub a breeze. ThermoSpas’ Thermo Lift 300 is the only cover lifting system that earned the Arthritis Foundation’s Ease of Use Commendation.