KOLODOGO Knee Booster,[Upgraded] Power Lift Joint Support Knee Pads Protector,Breathable Non-Slip Joint Knee Support Brace Kneepad for Old Cold Leg Sports Climbing Training Squat

Don't work it's so hard to walk with it onEven when I bend my knees it's hard to get back up. And the velcro it's not strong enough as soon I bend my knees they come off

they didn't work for my father

They are flawed by design. You cannot even walk in them much less get support. Don't waste your money or your time.