Thank you for viewing. These are Birkenstock sandals, size 28cm in Japanese sizing. Purchased from Monotaro in July 2025. I've worn them about 3 times, but the feel of the thong sandals doesn't suit me, so I'm selling them. Model number: 143621-43 Color: Although listed as blue, the actual color is closer to dark navy, as shown in the images. Size: EU size 43, Japanese size 28cm Condition: There are almost no scratches as shown in the images, but please refrain from purchasing if you are sensitive to used items. *Price reduction is not possible. Color...Navy