I recently discovered by accident at Saturn this massage seat cushions, and the same extensively tested all models, I've always had a problem back (lordosis). I've tested all models of Beurer and Medisan and am always on the stuck MG240. Even the much more expensive models from Beurer are no better, but even have an annoying Nachenmassage, for which I am much too large (1.96m). Can recommend 100% this product. Operation is super, style is really nice, massage process is among the best.