Q: How many inches? It says 4 but can it be higher? Can it also be placed inside the tube?
Q: How tall are two when stacked?
Q: BATH STEP WORKS WELL OUTSIDE THE TUB. HOW DO YOU STEP DOWN INSIDE THE TUB?
Q: Can the bath step be used inside the tub to sit on?
Q: Do you have a refill for the slip resistance textured top? The one I have has worn out and is dangerous?