SwimCross™ Exercise Systems Offers a New Kind of Exercise PoolSwimCross™ Exercise Systems, new from the makers of Endless Pools®, were designed by BMW Group Designworks USA. This exercise pool will revolutionize the “swim-in-place” industry utilizing Endless Pool technology and Watkin’s meticulous manufacturing and attention to detail. An exercise pool allows you to swim, run, jog or walk. The unique flow and depth innovation of an Endless Pools® exercise pool allows for a better and more beneficial swim-in-place experience. When it comes to an exercise pool, SwimCross™ Exercise Systems can't be beat.