The Vive Toilet Seat Riser is mostly stable and secure, but there are a few things to keep in mind. From our research, it provides the height and support that a lot of people need. The handles add extra stability and the design is pretty durable, so it can be really useful for getting on and off the toilet more easily.

However, the installation can be a bit tricky for some folks. Even though the manufacturer says it fits most standard and elongated toilets, we've found that sometimes the screws can be too big for the holes in modern toilet seat lids. Some people had to make adjustments like drilling new holes to get it all to fit right. But once it's installed, many find it to be stable and secure.

The non-slip pads that the manufacturer mentions help keep it in place, although a few users have noticed that it can shift a bit, depending on the specific toilet and installation quality.

Another thing is maintenance. Cleaning under the seat riser can be a bit of a hassle because you might need to remove the whole thing to properly clean between it and the toilet bowl. This could turn into a hygiene issue if not done regularly.

So, if having a perfectly fitting lid is super important to you, you might want to look into other options. Otherwise, the Vive Toilet Seat Riser seems to offer good benefits like extra height, support handles, and a comfortable design.