Toilet seat risers, as the name implies, are placed on top of the toilet bowl for the purposes of increasing the seating height of the toilet. Use of a toilet seat riser helps to avoid modifying or replacing the toilet itself to achieve an elevated seating height.
The ideal toilet seat riser has the following characteristics:
A toilet seat riser without grab handles will have a significantly shorter useful lifespan than a model with them.
A toilet seat riser which does not have supporting legs may be prone to popping off if the user applies significant pressure to only one side of it.
Standing up from the toilet at its natural height is slightly difficult, but still possible
Standing up from the toilet is no longer possible without extreme adaptation