Snow Peak Titanium Double Wall Mug 450, Set of 2 Purchased a while ago and stored in a dark place. Although unused, there appears to be some staining on the inside bottom, so please refrain from purchasing if you are concerned. There are no tags. Considering the above, the price is set low. If you have any other concerns, please be sure to confirm them before purchasing. Please note that returns are not accepted to prevent any trouble.