I have an old, old pair of flip-flops from Ann Taylor that have wonderful support for arches, and they are are the verge of falling apart.  I use these as slippers in the house in the warm months and as I get ready in the morning, before putting shoes on.  My arches collapsed years ago and I can't wear the flat-soled flip flops that you find in regular stores.  I have been looking everywhere for a comfortable, supportive replacement that wasn't called "orthopaedic" or cost $40 or more, and that was stylish too.  I read a lot of the reviews on the Reef Sandals and was excited to find them.  As soon as I opened the box, I slipped them on and was immediately happy.  They are incredibly comfortable, not only the arch support but the straps too.  Their feet and comfort level are effortless - slip them on and you are immediately comfortable.  I will definitely be buying more of the Reef Sandals!