This is a collar, now a nostalgic item, that was attached to the inside of the collar of a student uniform. It was worn to keep the collar clean, reinforce it, and also to add an accent to the uniform with the visible collar. This is an unused item purchased at the time and has been stored. It's the nostalgic King Dash brand. I think it's difficult to find this item in this condition. It will be shipped in a simple Yu-packet package. Please be aware of this.