I have designed that Lego style glasses because the majority of children avoid wearing glasses.
So that glasses are highly adaptable with parts that can be easy assembled used as a toy and protect from sun radiation.
With simple and easily replaceable lenses, these glasses offer a variety of uses,from sun protection to 3d Glasses.

glasses are made of many components, but if the assembly does not confer sufficient strength I uploaded a version that can be printed assembled, but that will make Lego only visual effect.
components have color only in rendering, so it can be printed in a single

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