Eventually, curiosity won.
After a little research, I finally discovered the answer.
It was a resin foot massage stick, sometimes called a foot roller or massage rod.
And honestly, once I knew what it was for, everything suddenly made perfect sense.
What Is a Foot Massage Stick?
A foot massage stick is a simple tool designed to provide gentle pressure and relief to tired feet.
To use it, you place it on the floor and roll your bare foot back and forth over the surface.
As the foot moves across the roller, pressure is applied to areas such as:
- The heel
- The arch
- The ball of the foot
The raised ridges and contours are intentionally designed to create a mild massage effect as the foot moves over them.
Simple idea.
