5 in most shoes, and have worn a 7 in some FitFlops. No support at all! Love the shoe, super comfortable. They hold up well, and my daughter says they are the most comfortable flip-flops she has ever worn. A lot of time-saving advice and strategies that average-joes and athletes alike can benefit from. and the came a day earlier. And no my spice containers are not huge, just the normal ones. The new sandal was smaller and narrower. Very very highly recommended for instrument training. I ended up going through 3-4 in total, plus a Q-tip and a paper towel to get all the old adhesive off (which is important to get the new ones to stick right).