The new Activity 2 50 '' Swim Spa is a longer version of our current model Activity 1. It has been added to our Passion Swim Spas collection because all swimmers who have tested our River Swim System in Activity 1 are thrilled. The River Swim System 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 Activity 2 Swim Spa makes the dream of swimming and training efficiently in your own garden come true.