I have used 200 kms only so far. It is not so comfortable as I expected but my foot shape is strange. Water moisture appeared inside - need to investigate as it supposed to be 100% waterproof.
In general it is a good adventure bike boot.
サイズチャート
A. Place both feet on a sheet of paper. Draw a vertical line to mark the tip and heel end of your foot.
B. Measure the lengths of both feet.
C. Compare the length of the bigger foot with the size table to find your perfect shoe size.