JBuds Frames feature a BYOF (bring your own frames) design. This design allows users to attach Frames to any type of eyewear with a temple width less than 4mm.Two hooks secure JBuds Frames onto regular glasses, sunglasses, and reading glasses, so you can listen with your own personal style. Speaking of style… Glasses come in different shapes and sizes such as aviators, wayfarers, and sport glasses.JBuds Frames can appropriately fit on eyewear that have a temple width shorter than 4mm.