Key factors are UV protection (look for UV400 or 100% UV), lens type (polarized vs. non-polarized), and how the frames fit your face size and shape. Choose a lens tint that matches your typical light conditions.

Compare UV protection, polarization, lens material and coatings, frame material and size, and price. If you often drive or fish, polarization can be especially important.

Consider your use case (daily wear, driving, outdoor activities) and preferences like eco-friendly materials, brand heritage, warranties, and comfort for extended wear.

Ask about polarization for driving, whether the frame size fits your face, and whether the frame shape and lens color suit your usual outfits to ensure a versatile, all-day option.