The Destin Active: All-Day Comfort, Performance Upgrade Everything you love about the Destin, built for people who move fast. If you have flat feet or low arches and you&';re a runner, hiker, or someone who never really stops, the Destin Active was made for you. Instead of the moldable TheraCush layer, the Destin Active uses Hypercell Active Foam, a high-rebound material that returns energy back to your foot with every stride. That means less fatigue and more go. Perfect Foam on top still handles over 90% of impact so your joints stay protected. Soft, light, and responsive in a low-profile package. Best for: flat feet, low arches, running, hiking, skateboarding, snowboarding, high-activity use. Forefoot: 5.5mm A Heel: 9mm