Outsole: Rubber; Heel: ABS Leopard Prints, Floral, Geometric Ankle Strap Chunky Adjustable Ankle Strap with Buckle Closure Block Heel Open Toe Ankle Strap Sandals Heel Height: 3 1/8 inches Please check the size measurement chart before ordering. Size Chart (in inches) US Size---------UK Size---------EU Size--------Heel to Toe--------Heel Height 5.5--------------------3.5--------------36-----------------8 7/8-----------------3 1/8 6.5-------------------4.5---------------37-----------------9 1/8-----------------3 1/8 7------------------------5----------------38----------------9 3/8------------------3 1/8 8-------------------------6---------------39-----------------9 5/8-----------------3 1/8 9-------------------------7---------------40-----------------9 7/8-----------------3 1/8 9.5---------------------7.5--------------41----------------10 1/8---------------3 1/8 10.5-------------------8.5--------------42----------------10 3/8----------------3 1/8 California Prop 65 Warning- "WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information: www.P65Warnings.ca.gov".