Love this infinity edge pool, which allows the water to spill over...therapeutic, very relaxing. 20 x 20 porcelain flooring. The pool edge is Bullnose Coping - softer edge, not sharp - and uses a 12 x 24 Turkish material in natural limestone. Charcoal briquette gas fire pits make the ambiance perfect and are constructed of 2 x 2 porcelain tile, Flat Black – inside of pool and for the pillars for the two fire pits. There is a 12 x 36 granite seat all around the interior of the pool; this is the area for overflow of water when the fountain is running.