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If your beachgoing sojourns might include stints of sailfishing off Isla Mujeres, Hammerhead is for you. Costa is all-polarized, all the time, and they’ve got that act down very well. Hammerhead is a supreme tamer of glare. Especially in our test shade, featuring Costa’s premium 580 glass lenses in a soothing yet thrillingly crisp gray base tint. The “580” stands for the ability of the Rx-able multicoated glass to block annoying yellow light around the 580-nanometer wavelength. Not that you’d know it per se, but you do know that colors appear saturated and the eye just plain feels good looking through. The shiny wrapped 8-base frame has beefy temples for side protection and spring hinges for rough-stuff durability. I could wish for an adjustable nosepiece or at least some nonslip features, but I couldn’t wish for better glass. $149 from Frames Direct: Click here for free shipping.
