A composite interlayer suitable for using laminated glass includes a layer of plasticized polyvinyl butyral sandwiched between second and third polymeric layers.

The geometry ranges from full stainless steel spheres to a sequence of gradually trimmed spheres down to a hemisphere, with an inlay of laminated glass with printed foil.

Like other modern architects, he employed metal, glass and laminated wood materials that we take for granted today but that in the 1940s symbolized the future.