The GEI RUBBER BUB COMFORT rubber mat is the most functional in its category. It has a unique design thanks to its upper dome-shaped surface, which makes it very comfortable to use. When the user stands on the rubber mat, the domes sag in order to support the entire weight of the user, providing an incomparable cushioning effect. When the user is no longer in contact with the mat, the dome-shaped surface naturally returns to its initial position.