Flexible, comfortable, adjustable. In a word, perfect. And, bonus, they came with a neat little travel bag and a pair of insoles. I was looking for a pair of wellingtons that could adjust as I often find boots are too tight around the calf, but the adjustable ones always seemed to be very expensive, or shipped from England, shipping not included. Then I found these, and I am more than happy that I did! Two thumbs up, mate, from Canada!