This is a C-Guard trumpet protection bag with the Yamaha Ginza store logo. It is said to have an anti-tarnish effect for silver products. I purchased it for a trumpet, but it's a bit long. Color: Blue to Navy There are no noticeable stains, but please understand that this is a used item. C-Guard, C Guard, trumpet protection bag, anti-tarnish for silver products, silver tarnish prevention, C Guard, trumpet, protection bag, bag, Yamaha, Yamaha Ginza, YAMAHA, Yamaha Main Store