LOTS of life left! I loved them for a year but my feet didn’t go back to normal size after having a baby. My loss, your gain! The size on the sole is AU size, but an 8.5 in US. - Premium water-resistant leather - Leather lining - Comfort Arch footbed with XRD® Technology for maximum comfort - Lug sole (rubber) with deep grooves designed specifically to increase slip-resistance in varied environments - Polyurethane midsole - XRD® in the heel for supreme shock absorption - Steel shank