Start with UV protection (UV400), then consider lens type (polarized or non-polarized), lens color, and frame size for a comfortable, secure fit.

Key factors are UV protection, lens material and coatings, polarization, frame material/weight, and whether the frame size suits your face.

For driving or outdoor activities, prioritize polarization and glare reduction; for everyday wear, choose lighter frames and versatile colors; for kids, ensure a smaller, durable, secure-fitting pair.

Focus on frame dimensions (lens width, bridge, temple length), nose bridge comfort, and whether the color and shape complement your face and wardrobe, while ensuring solid UV protection and durable construction.