I-FF Series Vertical Knee-up isekela uhla lwezivivinyo zomzimba ezingaphakathi nezingezansi. Ama-elbow pad anezingqimba, izibambo zezandla kanye ne-back pad zinikeza ukuqina kwezivivinyo zokuzivocavoca ngamadolo, kanti ukubamba ngesandla okwengeziwe kuvumela izivivinyo zokucwilisa.
Amapayipi esibili kanye nendawo enkulu yokubeka izinyawo kuqinisekisa ukuzinza okuhle kuzo zombili izindlela zokuzivocavoca.
Ama-elbow pad aqinile, aqinile kakhulu aklanywe ngendlela efanele futhi anikeza ukuzinza kanye nenduduzo yokuzivocavoca ngamadolo.
Izivikelo ezinkulu kakhulu, ezivulwa ngebhowudi, ezingashibiliki zisiza abasebenzisi ukuthi bangene futhi baphume emshinini ngokuzethemba.
Amapayipi ensimbi aqinile asezingeni lezimboni ashiselwe kuzo zonke izindawo zesakhiwo ukuze amelane nezimo ezinzima kakhulu. Uhlaka olumbozwe ngempuphu.
Ama-foot pad enjoloba ajwayelekile, ahlinzeka ngokuqina komkhiqizo futhi asiza ukuvimbela ukunyakaza komkhiqizo.