Z-CoiL Pain Relief Footwear Women's Toffler Slip Resistant Black Leather Clog Sandal Full-grain Leather Heel measures approximately 0.75 inches" Runs large. Slip resistant outsole, slips in the heel. Built-in rigid Z-Orthotic to protect and support plantar ligaments, reducing the pain of plantar faciitis, heel spurs, and arthritis. Patented conical heel spring - the Z-CoiL - to reduce up to 50% of impact as it eases overall fatigue and back pain. 3/4" forefront cushioning shields delicate toe joints, ligaments and tendons, while a wide toe box relieves joint pain and pressure. 3/4" forefront cushioning shields delicate toe joints, ligaments and tendons, while a wide toe box relieves joint pain and pressure. Rubber sole for additional slip resistance.