Getting the mount installed takes some fiddling, and then is a bit shakey. If you are willing to work with it, it will do it's job. It is certainly better than the windshield suction cup that disengages too often, often at highway speeds.

This is a GREAT inexpensive product for your TomTom XL/XL.S GPS. After purchasing my XL.S, I realized that the mount suction cup and disk that came with the product was dangerous to use. After making sure that the suction cup was tightly secured onto the disk, it would fall off while driving, hit my windshield wipers, turn on the water, falling into my lap, or worse, onto the floor, distracting me from my driving. I would, then, have to pull over to set it up again. An accident waiting to happen. With the ONE XL GPS Navigation Swivel Vent Mount, you are totally stress free! It comes with 2 clips that you attached to your air vent. After adding your XL/XL.S, you are able to adjust the swivel mount for the best angled viewing while driving. A great product at a great price - thanks to Overstock.com