Rainbow Sandals are everlasting. These are the Double Layered version of the original, providing you with more support and a longer lasting sole. You can wear these things until they break off your foot and trust us, this is a hard feet [get it? feet?] to accomplish. They may start out stiff the first couple times you wear them, but each time you put these on, they begin to mold to your foot. Within a solid week of wearing these flip flops, you'll have trouble taking them off, not because they're hard to get off, but because you won't want to. Surf sandals and flip flops never felt so good.