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Ray-BanRay-Ban's new Clubround frames, a more circular versions of clubmasters.

Summer has (unofficially) begun, so now's a better than any to stock up on a new pair of sunglasses. You could buy a traditional pair of aviators or wayfarers, or you could add something different to your collection: clubmasters.

Popular in the 1950s and 60s, clubmasters — or browline glasses— feature a slim frame along the top brow bar and circular, usually rimless lenses. Though the style of the sunglasses looks like something you'd see on "Mad Men," tons of modern designers have come up with their own take on the popular shape, making clubmasters a stylish choice for 2016 (not just the confines of Sterling Cooper).

Although our sunglasses experts previously noted that these frames work best with a triangular-shaped face, a pair of semi-rimless clubmasters will look relaxed and stylish on many. Below, our favorite pairs you can buy for under $150. With several different colors and prints available, there's an option for everyone.