Ethylene Vinyl Acetate sole Heel measures approximately 4 centimeters 【Unique Massage Foam Design】These pillow slippers are embossed with massage acupoints and acupressure stimulators, which can relax your muscles, stimulating blood circulation and relieving stress. The Cloud Shoes are ergonomically designed, the toe-to-tail is 15° angled balancing the pressure from your feet through to your hips.