3.1 Phillip Lim Alexa Zip Booties Alexa Boot by 3.1 Phillip Lim. Smooth leather ankle boot with exposed side zips & low, stacked heel.* Round toe * Slightly extended front shaft * Exposed zip detail at inner & outer sides * Seamed strip along center back with pull tab at top * Extended tab at back shaft opening * Tonal topstitching throughout Color: Black 100% Leather