The weight varies depending on the model. Fiberglass hot tubs are the lightest; Wellness models weigh ca. 150 kg; Ofuro models – ca. 100 kg. Polypropylene models come in various sizes, thus their weight ranges from ca. 180 kg to 280 kg. Rectangular polypropylene models are heavier and can weigh anywhere from ca. 250 kg to 400 kg. Wooden models weigh from ca. 250 kg to 400 kg, based on their diameter and wood type.