The Ultraleggera combines extreme lightness (1.66 kg) with a carrying capacity of 1.2 tons – parameters unparalleled in the world. It is manufactured using proprietary FiDU technology, developed in Poland, which enables energy-efficient, scalable and monomaterial production of metal objects. The stackability of the chair increases functionality in public spaces, The chair is fully recyclable and long-lasting. The object is a representation of the idea of sustainable development, the “less is less” approach, constant reduction and optimization, which identifies the competitiveness of Polish innovation.