Light Nature provides the geometry, we provide the honeycomb composite material. Nida-Core is extruded from tough, versatile polypropylene plastic. (Other materials are available). Thermo fused to the honeycomb cells are non-woven polyester bonding scrims with a polypropylene barrier film to limit resin consumption. When encapsulated in a laminate it is recognized by the US Coast Guard as a primary flotation material in small boats. Tough The important question is: "How do these plastic honeycomb sheets hold up in the real world?" Although no lightweight sheet is the answer to every possible application, Nida-Core boasts the broadest list of positive features. Some honeycomb cores are either stiff, light, quiet or economical. Nida-Core is all of the above...and more! Quiet Polypropylene honeycomb is an effective sound dampening material that provides a very low natural harmonic due to the polypropylene's viscoelacity and cell structure, effectively dampening sound and vibrations. Boats manufactured with Nida-Core honeycomb sheets demonstrate a dramatic improvement in vibrational dampening compared to traditional lightweight sheet construction methods.