Worse than using nothing.
My wife was excited I got this for her.  Looked like an elegant solution to the challenge of putting this thing in the car. But this device will not stay locked in place.  At first you think it's going to work.  You slide it up the leg into the hinge and it appears to keep the walker legs from fully opening, the legs do still move a bit.  But as you lift it and turn it horizontal, the weight of the legs make the plastic lock squeeze out of the hinge under pressure, often quickly enough to make it flip off the leg onto the ground.  The legs then open up quickly causing more of an issue that not using it at all.  Very dissapointed. Going to just use some Velcro tie wraps. Not an elegant solution but cheaper and they'll actually work.
Rating: 1 stars