Lub Prestige Series Back Extension yog ruaj khov thiab yooj yim-rau-siv uas muab kev daws teeb meem zoo rau kev cob qhia rov qab hnyav. Adjustable hip pads yog haum rau cov neeg siv ntau qhov sib txawv. Lub platform uas tsis yog-plam nrog cov menyuam calf catch muab ib qho chaw xis nyob, thiab lub dav hlau angled pab tus neeg siv kom qhib cov leeg nraub qaum zoo dua.