From Gianni Bini, the Irvin Stretch Block Heel Booties feature: Stretch fabric microsuede upper Soft snip toe construction Inside zipper closure Tricot fabric lining 4mm padded memory foam sock Airfit comfort technology in the heel providing extra comfort, durability and breathability Synthetic outsole Approx. 7.4" boot shaft height Approx. 9.4" boot shaft circumference Approx. 3.3" heel height Imported.