Designed without a lining for a look that will soften and slouch with wear, these over-the-knee leather 3. 1 Phillip Lim boots are a sexy investment piece. A button panel expands the gusseted shaft, and a buckled strap fastens behind the knee. Covered, squared heel. Nonslip patch at sculpted acrylic sole. Leather: Cowhide. Imported, China. MEASUREMENTS Heel: 3. 5in / 90mm Shaft: 16in / 41cm Circumference: 15. 5in / 39. 5cm. True to European sizing. Color: brown