These stoppers prevent eyeglasses from slipping, and are compatible with frames 4-10mm thick. - Product Name: Eyeglass Stoppers - Compatible Frame Thickness: 4-10mm - Example of Use: Prevents eyeglasses from slipping - How to Use: Hook over the ears - Care Instructions: Washable with water - Made in Japan Thank you very much for your interest in this product from among many others. We also sell clothing and miscellaneous goods, so we would be happy if you would take a look at those as well. Please feel free to ask if you have any questions. Please note that I work during the day, so I may not be able to respond to messages or answer questions until the evening. Also, please be aware that this product is also listed elsewhere, so there is a possibility that it may be sold out if purchased at another store due to a time difference. ☆For combined purchases, we will adjust the price and discount the shipping cost, so please let us know in the question section before bidding. Please note that we cannot make changes after you have placed a bid. #Convenient Goods #Eyeglass Stoppers