Our original compostable bin liners made from Mater-Bi, one of the strongest biopolymers on the market developed over years of scientific research Approved for local authority collection Breaks down into harmless organic waste. Toxin-free and not harmful to humans or ecosystems Does not release microplastics into the environment, instead will nourish the soil as it decomposes Includes 25 bags For use in standard kitchen bins (not compatible with Brabantia bins that are longer and thinner than conventional bins)