Endless Pools E500 Swim SpaStep Up to Aquatic Fitness & Luxury Our 15' Endless Pools Fitness System, provides the ideal environment for at home, total body fitness. Featuring the signature Endless Pools Swim Current, the E500 gives you the best swim current on the market. Fully adjustable for every level from Olympians to octogenarians the smooth current lets you swim easily in place. The broad, deep current also adds resistance to a range of aquatic exercises for added core