Adjustable 2-in-1 Cup Holder & Phone Bracket for Wheelchair, Scooter, Walker, Rollator - Universal Drink Bottle Holder Accessory (Black) - Perfect for Mobility Aid Users On-the-Go

Overall, this is a sturdy product and does what you would expect however, there are a few draw backs. First, I put it on a Guardian walker and it took a little figuring to get it attached. In fact, there is one knob on it that seems to have no function other than to unscrew the cup/cell phone holder. Also, when you put the clamp on the walker frame even when you tighten it the holder will freely rotate around the bar it's attached to. But, fear not, this is a good thing. That's because when attached and level it sticks out about 5" so, you can't set it up to face inside the walker; you will hit it with your thigh. You have to have it on the outside which can be a problem when going through door frames. It will fit, but if you have an attached cane/grabber on the other side, it's a squeeze.Now, why this is a good thing is because once you take your cup and cell phone out you rotate it downward and it is out of the way completely. BTW, I don't use the cellphone holder. I prefer to carry it on me because when you forget it's in the holder and you turn it downward...plop it goes to the floor.The other thing is because the holder does rotate downward with just a little effort you can't put a cup in one handed. You have to put a hand under the bottom then push the cup in. Again, though, not a bad thing because it secures the cup. But, the odd thing is you DON'T have to hold it to take the cup out. Just give it pull upwards and out it comes.Overall, I'm happy with this cup and do recommend it.