We ordered these for my husband for a long car trip. Sadly, even in size XL, they did not fit over his 62mm x 38mm Rx glasses. The case is nice but not firm enough to truly protect the frames well. We found a similar product on Amazon that does fit, and a hard sided case for $3. These are quite pricey for what they are and have been returned. One of the best things about shopping on Amazon is the ease in doing a return. Kudos to Amazon's customer service.