Overall, I find the design of these shoes to be almost perfect. However, I experienced a few comfort and sizing issues when actually wearing them.
I initially purchased a size 26, but it was extremely tight and virtually unwearable. I then exchanged it for a size 27.5, which felt very comfortable sliding into. However, once I fastened the buckle, the cutout section near the front started digging into the top of my foot while walking, causing some pain. Additionally, compared to regular sneakers, I feel these shoes may not be ideal for walking and could cause some discomfort to the soles of the feet over time.
I hope you might consider optimizing comfort in future designs. Of course, this is just my personal feedback, as foot shapes naturally vary from person to person—some have wider feet, while others are narrower.

MATRIX (Black)

普段スニーカーは25cmです。後部のストラップで調節できるので、サイズは問題ありませんでした。合わせるソックスで気分を変えられるところが気に入っています。また、とても軽くて履き心地は抜群です。
裸足で履くと足の甲にあたる部分により跡が付くのが気になりますが、履くうちに馴染むといいなと思います。いいお買い物ができました。