Are the Fast Lanes lenses actually polarized?

Yes. The Fast Lanes line uses polarized, mirrored lenses with UV protection, which is the main reason owners rate them so well.

Which lens width should I pick, 53 mm or 56 mm?

The 53 mm suits average to narrower faces; the 56 mm gives wider faces more coverage. If you are between sizes, the larger lens sits further out on the cheeks.

How do they compare with premium polarized sunglasses?

They deliver similar glare control and UV protection, but the plastic frame and hinges feel less refined than acetate or metal frames from premium brands.

Do they come with a case?

Knockaround typically ships the Fast Lanes with a microfiber pouch rather than a hard case, so a separate case is worth adding for storage.

Can I get them with prescription lenses?

No. The Fast Lanes are sold as non-prescription sunglasses only.

Are they good for sports?

They are listed for sport performance and stay put for casual activities like driving, boating and running, but they are not a wrap-style athletic frame.