I have a ton of trouble with my feet, and they are always cold.  Until I bought my first pair of polar fleece crocs.  I LIVE in these shoes. (I have 4 pairs in various colors) LOVE, LOVE, LOVE the pink!!  I get asked every time I wear them - WHERE did you find pink??? If you have tired feet, feet that swell, feet with nerve problems, hammer toes or any of the above - these are great.  Love to be able to just slip them on to run to the grocery, pick up children from school or walk to the mail box.  I would hightly recommend them. In street shoes I wear a 9.5 but have very short toes - so the 9 works perfect for me.  If you have long toes you might need to go up to a 10.