Ergonomic mats, Ergomat Basic Smooth. Basic Bubble Down is a light-duty ergonomic mat that will perform well in a variety of non-demanding applications like retail counters, pick lines, mail rooms and other typical office functions. The bubble profile base of the mat delivers exceptional ergonomic benefits while still accommodating pivoting workers and cart accessibility. In addition, the contrasting yellow bevel provides immediate visual recognition of a change in level for additional safety. Using Basic Bubble Down in manufacturing, assembly or other inappropriate and unsupported industrial uses will void warranty protection.