Elevate your hiking and sports experiences with these Keen "Rose" waterproof slingback sandals. Designed for women, these sandals feature a hook and loop closure and synthetic upper material for a comfortable and secure fit. The flat heel height ensures all-day comfort, while the synthetic outsole material provides durable traction. Perfect for summer, these brown sandals are versatile for both casual and activewear occasions. With a sports theme, these Keen sandals are the ideal choice for your outdoor adventures. US size 8.5. This size is not listed on the inside. I am an 8 and can wear them but my toes don't reach the end so I am thinking 8.5, maybe a 9? The footbed measures approx. 10" if that helps.