Women's Okabashi Sienna Black Strappy Sandals Size Small (5.5-6.5) Heel measures approximately 1.75 inches" Women's Okabashi Sienna Blacks Strappy Sandals Size Small (5.5-6.5) The Sienna is an updated version of an original classic, the Cleo. Given a more generous foot bed, a refreshed feminine strap design and an even more comfortable heel height (1 3/4 inches), this women's slide is a must-have for any loyalist. Good for You: Massaging Insole, Ergonomic Foot-bed, Superior Arch Support...Good for the Environment: Made in the USA, 100% Recyclable. Signature Microplast Material: contains Anti-Microbial Agent, Anti-Slip, Anti-Odor, Vegan-Friendly, Latex-Free, BPA free. Durable: Waterproof, Dishwasher safe. Okabashi's design is based on the study of reflexology. Massage beads in the contoured footbed feel amazing and support your overall wellness. Superior arch support and a heel cup promote proper alignment of the feet and spine. This can minimize strain on the knees, hips, and back and result in pain relief from several ailments. A toe rest prevents feet from sliding forward, allowing a more sure-footed step. Massaging beads are strategically placed across the foot-bed of each shoe to stimulate different areas of the sole. This component of our shoe design is based on the principles of a Japanese practice called Reflexology. The beads add another element of full-body comfort while promoting better circulation. Microplast is a specially formulated, patented, and recyclable blend of plastics that is far more durable than the plastics used in other, similar shoes and sandals. Our material is unique in that it is soft, flexible, non-slip, odor-resistant, dishwasher safe, and anti-microbial. Our customers aren't the only ones who think our product is great! In 2006, Okabashi merited an endorsement by the ACA (American Chiropractic Association). It is now the only footwear brand to carry this endorsement as a testament to the comfort and value of Okabashi's products. In today's high fashion world, shoes designed with foot care in mind often take a back seat to the stylized perception of how a shoe should look and the image that it should present. Each year millions of shoes are created by designers with a keen sense of new trends in fashion, but with little or no knowledge about the health or well-being of the human foot. Medical experts around the world agree that the majority of foot care related problems are the result of ill-fitting shoes. Okabashi takes a very different approach to footwear design. Starting with a basic understanding of the anatomic structure and functionality of the foot, a unique footwear product is created based on the belief that good health starts from the foot up.