My fourth pair of Crocs, these are fleece lined for winter warmth. If you have stone floors, or the sort of life where you nip up the garden to pick vegetables, or take stuff to the bins, these are ideal outdoor slippers. Shove your feet in and go. Warm, comfy, light as a feather, foot-shaped and waterproof (no holes around the lower area) you will probably be surprised to find yourself still wearing them hours later, having forgotten to take them off. Sizes are true. I avoid those with sort of half-way heels, these are open and flat at the back. The strap can be worn around your heel or pushed forward, clog like. I bought my sister some for Christmas also and now my mother wants some. They are great for older people, being non slip and without fastenings. Also great to take along if you are visiting and need to take off boots at the door and have something to wear in the house.