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Here's a rough guide to the sizing of our product range

XXS is recommended for ages 5-8 — Shop XXS frames
XS is recommended for ages 9-12 — Shop XS frames
Small is recommended for teens and narrow faces — Shop S frames
Medium is recommended for average faces — Shop M frames
Large is recommended for wide faces — Shop L frames

Great design to more people

The standard sizing system within eyewear never made any sense to us.

Why aren't there more sizes than one or two for a classic eyewear style? And why can't kids have the same styles as adults, just as with a pair of jeans or a white t-shirt?

BIOBIO is a lot about sustainability, but offering great designs to more people is equally important to us. This is why we create designs for all sizes.

/ Size inclusive design.

No size fits all. But don't worry, we've got yours covered.