Designed for those who are unable to grip the walker,Cradles forearm with soft vinyl padding for comfortable weight bearing,Large top bracket allows the platform attachment to be placed over the hand grip of the walker,Adjustable strap securely holds arm in place,Attachment for Underarm Crutch (Figure A) for item #115 must be ordered separately (Cannot be used with Bariatric model),Bariatric weight capacity 5 lbs.