Color: Light Blue Originally room sandals, I used these for outdoor wear for about two seasons. There are some stains if you look closely. Please check the photos. I am also selling size 37 in the same color. The felt material of the upper keeps your feet warm and feels good against the skin, making them comfortable to wear barefoot. The sole is made of EVA and is processed to prevent scratching of flooring, so you can use them indoors with peace of mind. The wide variety of colors and pop design make them a stylish interior product. You can use them in various indoor scenes such as your home, office, or when traveling. They are great for the whole family to wear, and also recommended as a gift. Color: Blue系 (Blue-based) Stains, tears, odors, etc.: Yes