This strap can be used not only for eyeglasses but also for masks and earphones. Since it comes in a set of two, you can use one as a replacement or match them. Size: Total length approx. 76cm x width approx. 1.8cm *Please note that there may be slight variations due to amateur measurements. 【Requests】 ・If there is a problem with the product you received, please contact us before leaving a review. (We cannot respond after a review has been left.) ・The color of the actual product may differ slightly from the photos due to the monitor you are using or the lighting during photography. ・We will ship in simple packaging. As a result, there may be creases or marks. s946