Our eco sponges are another great swap for your kitchen. These sponges feel and function like traditional sponges but are completely plant-based, plastic-free and compostable. The white part is spongy and absorbent, made of wood pulp while the yellow-brown part is scrubby and helps soap become sudsy, made of loofah. Durable: tough for stubborn dirt and safe to use on non-stick cookware, copper and stainless steel, glassware and much more. Non-scratch. 100% compostable and biodegradable.