I was worried about the fit, but the 8.5 is true to size and wonderful! The water shoes are very lightweight, stretchy, and slip right on. The insole has a little built in arch support, which is a welcome surprise. Large holes in the soles and the breathable stretchy uppers will allow the water to pass through quickly. I can't wait to try these cute and comfy sandals in the water, but I already know they'll be great for walking around town.