These are rubber mats that you place on the bar rail.
They’re about 24 inches in length, ½ inch deep. And 3 inches wide.
This where you make your drinks.
They’re designed to catch and hold any little spills or splashes
that happen when you make a drink.
Spill mats also help keep the glass from sliding around.
This is something the customers see so you need to keep them
Usually there will be several of these placed along the bar rail.