Completely redesigned from the ground up, the new GEL-Flux™ 5 steps onto the scene with a secure and breathable seamless upper and more cushioning than ever before. The SpevaFoam™ Midsole makes for a responsive, energized stride while the rearfoot and forefoot GEL® provides premium cushioned comfort that absorbs shock during impact and toe-off phases. Weight: 9.1. Heel Height: 22mm. Forefoot Height: 12mm.