Design Eva Harlou | DK The Mask Stool is designed by the Danish architect Eva Harlou. The design is the result of a new ground-breaking production method allowing Mater to use the low-value waste from Carlsberg’s beer production – the spent grain (Danish ‘mask’) – and turn it into useful and unique design solutions. In collaboration with Danish Technological Institute Mater has developed a new industrial technology to process waste, e.g. spent grain from beer production along with other fibre-based waste materials. After years of research and tests, Mater managed to process the waste material and mix it with post-industrial plastic waste in a unique compound suitable for press moulding. The Mask stool demonstrates a waste-to-value technique and solution for reusing companies’ resources more efficiently, caring for Mother Earth and the next generations. The Mask stool is adjustable in height and thereby a flexible piece of furniture. The production method enables companies to create their next interior solution based on their own waste streams. Mask Stool is created to support the UN SDGs 12, 13 & 17.