Persol PO3019S Square Sunglasses vs Costa del Mar Rinconcito

The Persol PO3019S is the dressier pick: hand-finished Italian acetate, crystal lenses and the brand's signature arrow hinge, with a square wayfarer shape that suits high-bridge faces. The Costa del Mar Rinconcito is the water and sport pick: polarized polycarbonate lenses at 10% light transmission, a wider 60 mm lens and a medium-to-large fit built for glare off the water. Reviewers praise Persol's build and lens clarity but note the acetate needs care and the fit runs narrow for wide faces. Costa owners rate the polarization and grip for fishing, though the plastic frame feels less refined than acetate.

• Choose the Persol PO3019S if you want a handmade Italian acetate frame for everyday wear and city use, and your face suits a standard-coverage square with a high bridge.
• Choose the Costa del Mar Rinconcito if you spend time on the water or in bright sun and want polarized lenses with a wider lens and a fit built for medium-to-large faces.