The Galaxy Series Back Extension suna da ƙirar tafiya tare da masu daidaitawa na baya, ƙyale mai motsa jiki ya zaɓi kewayon motsi cikin yardar kaina. Ƙunƙarar ƙuƙwalwar da aka faɗaɗa yana ba da jin dadi da goyon baya mai kyau a duk fadin motsi. Dukan na'urar kuma ta gaji fa'idodin Galaxy Series, ƙa'idar lever mai sauƙi, kyakkyawan ƙwarewar wasanni.