I used these shoes outdoors for a short time, twice, after purchasing them. I am selling them because I don't have the opportunity to wear them. * Size M * Red thong is a key feature * Suitable for both casual and semi-formal occasions. * The Vibram sole on the bottom of the zori is slip-resistant and also reduces mud splashing, so you can use them with confidence even on rainy days. These are Karen Blosso zori, offering the ultimate in comfort – they won't make your feet tired or hurt, a feature unique to these zori. The surface appears to be in good condition, with no noticeable stains. Please understand that these are used items, and if you are concerned about minor details, please refrain from purchasing. Thank you.