I've only worn these a few times during festivals. This is the first time I've noticed, but the quality and size of the wood seem slightly different between the left and right... The thong is red. I think it's a more beautiful red than in the photos. The biggest scratch is shown in the photo, and since these were used by a child, they show some wear and tear. Please understand this. Because the nearest post office doesn't have a holiday counter, I can't ship on weekends or holidays.