The new Endurance Pro Swim Spa is a longer and deeper version of our current model Fit. It has been added to our collection because all swimmers who have tested our River Swim System in Fit are thrilled. The River Swim System (page 37) provides a continuous stream of water across the width of the pool, giving the swimmer a strong current to swim against. At the same time, the water surface is unbroken and remains calm, so you can keep your head dry without any problems. For all swimmers, the Endurance Pro makes the dream of swimming and training efficiently in your own garden come true.