From Ryka, the Women's Devotion Max Mules feature: Engineered knit upper with stretch topline Slip on Instep pull tab Fabric lining Anatomical insole for arch and heel support; partially recycled EVA Maximal ACTIVfoam™ EVA midsole for soft cushioning  plus extra RE-ZORB® LITE in the forefoot and heel Full-length RE-ZORB® responsive cushioning Durable two-piece rubber outsole for grip with built-in compression channels for shock absorption Approx. 1.05" heel height Weight: 194g/6.9oz per shoe Heel-to-toe drop: 10mm Imported.