Best Wide Shower Commode Chair

The chair is sturdy and rolls very well. However, it fails the same why we have found all rolling shower chairs fail, because it is a commode. There is a hole in the middle of the seat. Included is a foam insert to block this hole, but like every other rolling shower chair we have found, the insert falls through the hole.The photo shows the insert after the first use. From experience this is not likely going to last long. The chair is rated for 300 lbs, but it can handle closer to 100 lbs.I don't know why no one sells a rolling shower chair that is not a commode. A smart company could just sell a replacement seat that does not have a hole.