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It’s a well-known fact that Costa Del Mar makes some of the best fishing sunglasses, with durable frames and protective polarized lenses. And right now, you can get Costa sunglasses on sale up to half off during this early Prime Day deal. That means you can save over $100 on a new pair—the lowest prices we’ve seen in months.

While Amazon Prime Day isn’t until July 11 and 12, you can save on Costa sunglasses ahead of the event, including popular styles like the Rincon fishing sunglasses and the beloved Fantail. Below are the best Costa deals going on this week. Don’t wait—these prices won’t last long.