Browline glasses are a style of eyeglass frames which were very popular during the 1950s and 1960s, especially in the United States of America. The name derives from the fact that the bold upper part of the frames frame the lenses in the same way that eyebrows frame the eyes. The glasses were first manufactured by Shuron Ltd. in 1947 under the "Ronsir" brand and quickly emulated by various other manufacturers. The design became the most common style of eyeglasses throughout the 1950s and the early 1960s before it was surpassed in popularity by solid plastic styles. Browlines enjoyed a renaissance as sunglasses in the 1980s before returning to popularity in the 2010s, with the rise of retro style and the hipster subculture.