4.Cushion:make the user in a comfortble cushiion,prevent user from hurting and also support the user

5.Introduction card:sitting on the cushion and lay on the back cushion,hold the handle,push forward forcefully.extend you arm straightly as you can.then come back slowly to the original place,and repeat the action.

6.muscle exercised:deltoid,triceps

7.140x140x175cm