I encourage you to look at online reviews--I had to size down to a W6 and I usually wear a W7 in Crocs. Official description: The look and feel of our Classic Mega Crush Clog is now available in sandal form. Introducing the Classic Mega Crush Sandal, featuring an enhanced rubber tread, updated detailing around the outsole and a platform ready to take any outfit to the next level. A two-strap upper and secure backstrap help ensure a secure fit, while boasting holes for personalization with Jibbitz™ charms. Are you ready for your new crush? Mega Crush Sandal Details: Unique 2.5-inch / 6.4cm height, measured from floor to heel rest Two-strap upper and secure backstrap Updated, enhanced rubber tread Textured detailing around the heel, toe box and collar Customizable with Jibbitz™ charms Iconic Crocs Comfort™: Lightweight. Flexible. 360-degree comfort.