All materials used by CORALDO come from fully natural, fair and sustainable sources and are processed with great care. Some details: Flax and Linen are natural textile materials. Flax is ideal for CO2 reduction. One hectar of linen seeds can absorb about 3,7 tons of CO2 and convert in into oxygen. The plant itself requires a minimal amount of water and has no natural predators. Therefore there is no need for the use of pesticides. Our slippers are made with non-bleached textiles, which means the slippers are completely biodegradable and can be recycled. Cork is a 100% natural and biodegradable material, and as such is also renewable. Layers of the tree bark are stripped with great care (without damaging the tree) and are processed to create our products.