It says they are glass but then the lens says plastic?

The color 400710 has plastic polarized lenses.

Are these authentic Costa’s that I could send into costa repair? Do they have the authentic Costa card?

All sunglasses and optical frames are packaged in the original case and/or box with any tags and stickers, which also includes a cleaning cloth or bag. Some of luxury brands even include their own authenticity certificate and/or a manufacturer's brochure in their packaging. By ordering glasses from Ezcontacts, you receive top customer service, quality, and of course authenticity.

Yes, this particular color is polarized.

Are the Costa Fernandina plastic lense sunglasses polarized?

This particular color is polarized.

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Costa Del Mar

6S4007 FERNANDINA 6S4007_G

Name: Costa Del Mar 6S4007 FERNANDINA 6S4007_G
Brand: Costa Del Mar
SKU: 959599-959615
Price: 209.25 USD
Availability: InStock
Rating: 4.9 (14 reviews)