This is a mute bag made of genuine cowhide leather. It's a product developed in-house. It's truly convenient. Black is also available. This is a special introductory price. The color is navy. It fits all 5 types: straight, cup, Harmon, leather bucket, and leather plunger mutes. It can hold two pens and an A4 file. You can set it on a music stand while it's still in the bag. Made in Japan. We manufacture it along with the soft leather bucket mute. Thank you.