I was between sizes and ended up keeping the larger pair. From the manufacturer: Taking our iconic Original Universal to soaring to heights, our edgy Flatform sandal uplifts any outfit with a platform footbed. Finished with earth-conscious recycled polyester straps, this sandal makes a statement while keeping you comfortable. Universal Strapping System™, Quick-dry webbing made from recycled plastic using traceable, verifiable REPREVE® polyester yarn by Unifi® supports your foot and stands up to abuse Easy hook-and-loop closure comes on and off quickly and gets the fit just right Molded EVA midsole with heel cupping and arch cookie for added support Rubber outsole for durability and traction Treated with Life Naturals, a responsibly sourced peppermint-based antimicrobial that fights the growth of odor causing bacteria Sustainability Initiative(s): Vegan, Webbing made from recycled plastic using traceable, verifiable REPREVE® polyester yarn by Unifi® Best for: festival wear, getting around town, all-day wear 1.75" platform height Half pair weight for size W7,M9,I2/3,T4,K13,Y4: 8.5oz This style is recyclable only through our TevaForever recycling program. TevaForever accepts any style of your well-loved Teva sandals to be recycled and they’ll never see a landfill. Learn More RN 88276