Sustainable Sponges are grown rather than harvested from wild stocks. Sea sponges are grown from small cuttings taken from cultured broodstock sponges in the crystal clear waters of Micronesia. Cuttings are attached to small lines and left to grow for around 2 years before harvesting. No chemicals are used in the farming process. By purchasing a sustainable sponge you aere supporting local communities by promoting sustainable livelihoods and contributing to protecting the environment. Sustainable Sponges are a biodegradable, renewable resource. Sustainable sponges are very durable and can be used again and again with good care. Sustainable sponges have natural antibacterial and antifungal properties that help prevent the growth of bacteria, and mildew without requiring any chemicals. Luxuriant for bathing, large sea wool bath sponge, comes in a silk bag.