The green mirror lenses are awesome. Great visibility into the water and they're very scratch resistant. However, the black plastic piece near the ears started warping and eventually buckled bad enough it hurt to wear. I paid shipping to send them back to Costa to have them repaired under warranty. Unfortunately, they decided that the plastic warping wasn't covered under their warranty (then what is actually warrantied?) so I would have to pay extra to have them repaired.

If I had it to do over, I'd avoid these glasses. The lenses are great, but the frames are prone to failure and unfortunatelyl Costa will no longer stand behind their product.