Begin with your primary use (daily wear, travel, or outdoor activities) and pick a frame size and UV protection level that fits. Ensure the frame fits comfortably at the temples and nose bridge.

Key attributes are UV protection (look for 400 or higher), lens type (polarized can reduce glare), frame size and material, and how they fit your face shape and lifestyle.

For sports or high-glare settings, choose lightweight, secure-fit frames and glare-reducing lenses. For everyday wear, prioritize durability, comfort, and how well the color and style match your wardrobe.

Ask whether you need polarized lenses for glare, photochromic lenses for changing light, or a particular frame size. If you wear prescription lenses, check compatibility or availability of prescription options.