The Aluminator style of Irish Eyes reading glasses features springs hinges for comfort. When you read, choose the most comfortable eyeglasses for reading you can. Spring hinges, unlike hinges held together with just a mini screw, have more flexibility, expanding the rims to fit your ears. Your reading eye glasses stay firmly on and last longer. Compact reading glasses make excellent use of the spring hinges. Be sure and do a search for spring hinges reading glasses online.