The Cush Active: Performance Upgrade The Cush you know and love, built for athletes and movers with mid to high arches. If heel support is your priority but you also need your insole to keep up during runs, hikes, or training, the Cush Active delivers both. Hypercell Active Foam replaces the moldable TheraCush layer for 64% energy return with every step. Combined with Perfect Foam&';s 90% impact absorption and Archtex arch stability, it&';s a four-layer system that protects your heel and powers your stride. Best for: mid to high arches, heel pain, running, hiking, training, high-output sport. Forefoot: 5.5mm A Heel: 9mm