I've used this about twice during trips. I didn't see any noticeable stains, but please consider purchasing only if you understand that this is a used item. * There is a twist in the strap from the beginning. It will not return to its original straight shape. I believe this is an initial defect. * I will not accept price negotiations. * It will be placed in an OPP bag and shipped in an envelope. Chikawa Hachiware Usagi Smartphone Strap