The 25th anniversary of this legendary runner includes the next evolution of our ultra-lightweight flytefoam cushioning: flytefoam propel & flytefoam lyte. These two cutting-edge technologies work together to deliver energized cushioning & exceptional comfort from heel to toe. Count on gel-kayano 25 for a premium & reliable ride that stabilizes your foot & fits to perfection. Weight: 11.85. Heel height: 22mm. Forefoot height: 12mm.