Various styles of sunglass frames hold lenses in different ways. Common sunglass frame styles include full-frame, half-frame, and frameless versions. Full-framed sunglasses completely surround the lenses. Half-framed sunglasses surround only half the lens, usually the upper portion. Frameless (rimless) sunglasses, a favorite among people who prefer slim lines and lightweight frames, have no rims around the lenses. The lenses of this type of sunglass frame are usually attached to the ear stems.