Rainbow has been producing great sandals since 1974. This version has Swarovski Crystals embedded in the strap. These are some of the most comfortable and longest lasting sandals on the market. Each pair will vary slightly because they are handmade. The straps lined with 2000 lb test nylon, Guaranteed for the life of the sole. They should fit snugly at first, then they will become more comfortable as the foam forms to your foot.
If you are between sizes, the larger will probably fit best.