The rectangular design of the Supreme Leisure fiberglass pool is clean and contemporary. Inside, this fiberglass pool maximizes end-to-end swimming for exercise and fitness. Available in two sizes for those who truly love being in the water. Leisure Pools newest composite fiberglass swimming pool, The Supreme, is now ready for basketball season. The design features steps on all four corners with extended seating benches at the front. Leaving lots of “court” to dribble inside of.