Shrilk is a biodegradable alternative to plastic. It is a material based on the chemistry and molecular design of the insect cuticle. It is made of silk proteins and waste material from the fishing industry (i.e. chitin). The novelty of Shrilk, based on the association of natural components with their molecular design in natural structures, has started a whole new approach to sustainable and bio-inspired materials. The main component in Shrilk is chitosan, a form of chitin, the second most abundant organic compound on earth. It can be found in everything from crustacean shells to insect cuticles and butterfly wings. This feature allows a vision of future materials being produced and used in the local surroundings and thereby mitigating the pollution issues of transport and logistics we face today. The main component in Shrilk is chitosan, a form of chitin, the second most abundant organic compound on earth. It can be found in everything from crustacean shells to insect cuticles.