If you're unsure, go ahead and get these! I own 20 pairs of crocs; MaryJanes, Professional, Beach, Mario Batali, flip flops, etc..  plus the Gretel clog in both Canary/Oatmeal AND Black/Black.  These are my FAVORITE Crocs, along with my black Crocs flip flops (which are super comfortable).  You CAN wear them in summer if you stay indoors, but your feet WILL BAKE (sweat) if wearing outside in hot weather. I wear a 6B, but like plenty of toe room, so I ordered a 7, which fits great - with OR without socks! And when I wear them with socks, my feet usually don't sweat (depends on the socks, I guess).  These are machine washable (air dry), but make sure the lining is INSIDE OUT; otherwise, it could take DAYS to fully dry! Hint: If you're planning to wash them, wear them first (without socks) and when you pull them off, the lining will come out halfway and then you can easily finish turning the lining inside out for washing.  I can't wait to get these in more colors! :^)