The RB4320CH pairs a 58mm round lens with a plastic front and 140mm temples, one of the larger openings in Ray-Ban's round plastic lineup. Because the eye size sits above most of its round-frame siblings, the replacement lens is cut to a noticeably wider curve than the 51-53mm versions nearby.

At €25, this set drops into the existing RB4320CH frame without adhesive or frame modification, restoring clarity after scratches or fogging. The lenses ship unglazed and ready for the customer's own frame, sized precisely to the 58-140 spec stamped on the frame's temple.

Frequently asked questions

What if the lenses I order don't actually fit my frame?

Every pair is matched to a specific model, in this case the 4320, so mis-fits are uncommon, but if the lenses don't seat properly you can return them within 14 days for a full refund, no questions asked.

How much does it cost to replace lenses instead of buying a new pair of sunglasses?

A pair of 58mm lenses for the 4320 starts at €25.00, a fraction of a new Ray-Ban frame, and shipping is free worldwide with no minimum order, so the total stays close to that price.

Do replacement lenses block UV rays as well as the ones they're replacing?

Every lens we sell, including each option among the over 15 lens colours, including mirrored and polarized options, blocks 100% of UVA and UVB radiation, so changing the color or finish on your 4320 never means sacrificing sun protection.

What's the warranty if a lens pops out or discolors after a few months?

All lenses are independently made and carry a 3-year warranty against manufacturing defects — if a 58mm lens fails to seat correctly or the coating degrades on its own rather than from an impact, we'll replace it free.