Inspired by the natural phenomenon of the Northern Lights, this special seasonal pack radiates energy. The 25th anniversary of the legendary GEL-Kayano® includes the next evolution of our ultra-lightweight FlyteFoam® cushioning: FlyteFoam® Propel and FlyteFoam® Lyte. These two cutting-edge technologies work together to deliver energized cushioning and exceptional comfort from heel to toe. Count on GEL-Kayano® 25 for a premium and reliable ride that stabilizes your foot and fits to perfection. Weight: 9.81. Heel Height: 24mm. Forefoot Height: 11mm.