Designed for the eclectic runner, the Cloudsurfer embodies fun and performance, giving one of the most unique sensations that On has ever offered. The slender upper with lightweight mesh in 3D Air-Mesh microfibre allows excellent ventilation and cooling, plus the perforated tongue adds comfort to breathability. The patented CloudTec system combined with the Speedboard is perfect for transforming the energy of the race into a forward thrust, the special Rebound rubber offers maximum responsiveness and abrasion resistance. Comfort and visibility, the part of the ergonomic heel is completed by a band of support to hug the heel and offer a perfect fit. Reflective applications on the back and sides help visibility in the dark.