Iyo Fusion Pro Series Back Extension inogara uye iri nyore kushandisa iyo inopa yakanakisa mhinduro yemahara uremu kumashure kudzidziswa. Iyo inogadziriswa hip pads yakakodzera kune vashandisi vehukuru hwakasiyana. Iyo isiri-inotsvedza tsoka yepuratifomu ine roller mhuru inobata inopa yakanyanya kugadzikana yakamira, uye iyo angled ndege inobatsira mushandisi kumhanyisa mhasuru dzekumashure zvakanyanya.