"Rubber-Cal's ""Eco-Sport"" interlocking rubber tiles are a recycled rubber floor that is 3/4 in. thick and available in 4 aesthetically pleasing colors, Coal, Blue, Green, and Terra Cotta. With their 3/4 in. gauge, these rubber flooring tiles are designed to withstand the abusive conditions and are ideal as equipment and ground protection mats. Gym floors are an area that experience a lot of foot-traffic, dropped weights, excessive dampness, and are burdened with very heavy equipment. These heavy-duty mats are not effected by dampness or water and offer ample defense against dropped barbells or heavy fitness machines. This recycled rubber floor is also excellent for outdoor applications due the high contents of high quality recycled tire rubber used in their production. Recycled rubber is also a superior material when trying to reduce noise, contain vibration, and absorb shock. These products are specifically manufactured for durability and are designed for either residential or commercial applications that are require ground protection mats. If you are concerned about installation, we have made it easy for you. This product offers an interlocking mechanism, a plastic connector pin, that connects 2 tiles together. The connector pins are made of hard plastic with ferruled edges that holds them in place inside the tile once they have been inserted. This is an easy do-it-yourself flooring installation that can be done by anyone."