Dark gray Olukai thong sandals, made of synthetic material, with new tags. - Color: Dark gray - Style: Thong sandals - Logo: With a distinctive logo - Material: Synthetic material - Tags: With new tags Thank you for viewing. These are Olukai beach sandals in a charcoal gray color, close to black. They are incredibly comfortable. They have been stored in a closet at home for several years. If you are considering wearing them this summer, please consider them. The US size is 9, and I usually wear a Japanese size 27cm.