1.it indicates user leg entrance
2.adjustable leg bracelet to tighten around the user's leg according to their size
3.Softer inner material to reduce the friction created between user skin and the device
4.Spring acting as muscle through contraction and relaxation during user movement
5.ball and socket joint acting as ankle joint (i.e connects the movable upper part and static lower part)
6.Ring holding the heel bone ,part of the foot which first starts walking .Hence the material placed over there should be strong enough to withstand the force applied
7.string which prevents the movement of foot in all direction (avoids waving of foot)