Diego
A broad Costa fishing square with big lenses, clear side presence and straightforward mirrored performance.
Prices are a snapshot from when this page was built — confirm on the retailer's site.
Story & heritage
Current Costa product pages keep Diego in the US sunglasses range, with official snippets showing XL sizing and polarized 580 lens options.
Within Costa’s lineup it reads as a larger angler square: more architectural than Permit, less specialized than the newest King Tide.
Materials & craft
Official Diego snippets list gray silver mirror, green mirror, gold mirror and blue mirror lens variants with Costa’s polarized lens technology and 100% UV protection.
How to choose & style
Choose Diego by face coverage first: Costa’s water frames work best when the temples stay secure under a cap and the lens color matches the water rather than the outfit.
Blue mirror reads brightest for offshore glare, green mirror suits variable inshore light, and gray or copper-family lenses feel quieter for everyday use.
