Consider the frame material (recycled or bio-based options), how the glasses feel on your face, and the level of UV protection for the lenses.

Look at frame material and construction, lens quality and UV protection, lens options (polarized vs. non), and fit (bridge width and temple length) and price/ethics.

Think about intended use (driving, outdoor activities, daily wear), lens coatings (anti-scratch, anti-reflective), color and finish, and overall comfort (weight and nose pads).

Choose a lightweight frame with good UV protection, consider polarized lenses if glare is a concern, and verify the size fits your face and the style suits you. Also check that the materials are clearly eco-friendly or certified.