Built for the cross-training runners out there, the On Cloud X 4 is a versatile workout shoe that you can wear all day, no matter what type of workout is on your calendar. With running shoes gaining more and more stack, the Cloud X 4 finds the ideal balance between well cushioned enough to deliver a comfortable underfoot experience on the run, while still offering the connected to the ground feeling athletes need to take on those HIIT workouts. In the midsole, the Cloud X 4 contains Helion foam cushioning for soft landings while the new X-shaped Speedboard provides a propulsive toe-off as well as flexibility during multilateral movements. For grip and traction, the Cloud X 4 features areas of exposed outsole with rubber pads strategically placed in high wear areas, which gives athletes the stickiness needed to attack their workouts while shedding weight where possible. Wrapping this shoe up is the eco-friendly upper that is made up of 100% recycled polyester that's thin and breathable, which makes this a fantastic option for indoors at the gym or hot summer days on the roads. Overall, the On Cloud X 4 delivers on comfort, versatility, and the aesthetic that cross training athletes look for in an everyday running shoe.