lumbar support Size:large medium small Structural performance and composition:the product composed by steel plate ,knitted fabrics ,canvas ,leather ,elastis ,nylon belts,sticky buckles Applicable scope:fix and tight lesion Application method :use it follow the doctoer's advice Notes: 1)check each part of the produce whether reliable 2)fix the product according to the condition 3)use it follows the doctor’s advice storage method keep clean , ventilate ,moisture-proof characterisic 1)the user –friendly design ,full breathable fabric 2)the arc base plate conforms to human body theory of structres