Blue patterned zori sandals, size M, rubber sole. - Color: Blue - Size: M - Sole Material: Rubber - Design: Striped pattern - Made in China Thank you for viewing. I've been using zori sandals indoors, as I heard they are effective for lower back pain. I personally find them helpful, so I buy them in bulk when I find them. These are labeled as size M, but they were a bit large for me, so I'm selling them. Although they are new and unused, they have been stored at home, so please refrain from purchasing if you are concerned about the details. Please purchase with the understanding of no returns, no exchanges, and no cancellations.