Clip-on sunglasses attach to regular eyeglasses through magnets, clips, or hinges, allowing wearers to easily transition between indoor and outdoor settings without switching glasses. More affordable than prescription sunglasses, they come in various styles and tints to match different frames.

Match frame shape and size for a proper fit. Choose the attachment type (magnetic, clip, or flip-up) per your preference. Select an appropriate tint for your activities—darker for bright sun, polarized for driving—and verify 100% UV protection and a lightweight design.

Attaching varies by design: magnetic types simply align with the metal frame; clip-style versions require gently squeezing the clips to open and place over your frames. Flip-ups attach at the bridge and stay hinged. Always handle by the frames to prevent smudges and scratches on the lenses.

Quality clip-on sunglasses provide 100% UV-A and UV-B blocking. Look for labels indicating "UV400" or "100% UV protection" to ensure adequate shielding from harmful radiation. Protection levels can vary, so checking manufacturer specifications before purchasing is essential.

Yes, they typically work with plastic frames, but compatibility depends on the frame's design and thickness. Universal clips fit most plastic frames, while magnetic options require specific compatible frames. It is best to check product specifications or consult an optician to ensure a perfect fit.