These are true to size in terms of the base of the shoe. However, as other reviewers mentioned, the straps were pretty tight when I first got these, and I was a little worried they would be uncomfortable. After a day of breaking them in, though, the straps loosened up a bit, and I was perfectly satisfied. The base of these flip flops is a soft, durable foam, and it literally feels like you are walking on cushions. In addition to the high comfort, these shoes are still slim and sleek and very fashionable -- I especially love the glittered straps. Thank you, Reef!