We used Georgik's iron coreless type for 4 to 5 years, durability was good, so purchase a toe iron core this time. Speaking of disadvantages, because it is 2E width, I want 3E ~ 4E width, we recommend purchasing 1 ~ 2 size larger than normal size. This time the iron core was made, because it made it the usual size, the width was tight. (Because it is iron core (because it is not flexible), it was a failure to purchase it with the same size as without core as we thought about it, so I was wearing it because it was not too hard to wear.) If the width is 3E, ☆ 5 It is one.