Description:
1) spring
2) fixing device for shoes
3) wrap calf
4) control lever

Specifications:
1) dimensions:185 x 390 x 890mm
2) weight:8.2lbs (1pc)
3) model no.: Ss-001
A) weight:60 - 80kg
B) weight:80pro
C) weight:80kg~110kg
D) weight:110kg
E) weight:30kg~40kg(kid)
D) weight:40kg~60kg(kid