There seems to be enough strength to say safe shoes. There is no fastener, but it is okay to save time and labor when wearing. I usually wear wide shoes, but it is usually 25.0 foot size, but I bought 25.5 cm this time, it was just fine, without my legs hurting even if I wear it long.
I think that it is somewhat larger in size. The comfort was also not bad and there were no pain at the boundary of the core specific to the safety shoes. Because it is not a fastener type when wearing just because it can not check the opening of the shoe with the eyes I feel a little troublesome and difficult to wear.