I purchased the Coral color in a size 6 for a recent trip to Thailand. I was a bit hesitant considering I am a size 6.5, but based on reviews I decided to order a size down. I'm glad that I did, as the adjustable straps made the shoe very comfortable and my foot barely reached past the sole. These sandals are incredibly comfortable and secure. I didn't slip once, despite wearing them in the water at the Elephant Nature Park. I had brought several pairs of shoes with me in case these did not work out, but ended up wearing these sandals 90% of the time!