I believe this was only placed in the wedding reception waiting room, so almost no one used it. The following is a quote: ----------- In response to requests from companies and stores, a set of three reading glasses has been renewed in a compact size! It will be helpful for customers who have forgotten their reading glasses! Please install it as equipment at reception desks, service counters, storefronts, etc. of government offices, banks, airlines, hotels, post offices, and entertainment facilities. ■Materials: Frame: Plastic, Lens: Acrylic, Glasses case: Synthetic leather ■Size: Width: approx. 15cm, Height: approx. 15.3cm (case only 12.8cm), Depth: approx. 7cm