Higher bridge design for low nose bridges - Keeps glasses from slipping down on those whose nose bridge falls at or below their pupils | Flatter front for high cheekbones - Helps prevent glasses from digging in or moving when you smile | Nose pads designed for extra comfort - Metal frames have adjustable nose pads, while plastic frames nose pads are deeper and have more flare | Longer temples for deeper faces - Designed to rest more comfortably on ears that further back from the face with spring hinges