Start with fit: pick a frame size that matches your face width and a bridge that sits comfortably on your nose. Choose a grey shade that flatters your skin tone, and ensure the cat-eye shape complements your features.

Look at size (eye width, bridge, temple length), material (acetate vs metal), weight, hinge quality, and whether the lenses support your needs (prescription, UV protection, or coatings).

For daily wear, prioritize lightweight durability and a versatile grey tone. For work or formal occasions, choose a refined rim; for screen use or travel, consider coatings like anti-reflective or blue-light protection.

Compare model sizes and fit across brands, check the frame material and finish, and verify the grey shade aligns with your style. Also consider warranty, aftercare, and whether the model supports prescription lenses if needed.