This natural sea grass sponge was sustainably harvested from self-regenerating sponges in the Atlantic Ocean. Similar to pruning a tree, divers harvest only the outermost portion of the sponge to ensure healthy continued growth. Biodegradable, naturally antimicrobial, and gently exfoliating, these sea sponges are the perfect bath time buddy. 4.5-5 inches in size. Great for all skin types. To clean, soak in one cup of water to one tablespoon of baking soda every two weeks. Let the sponges air dry in a well ventilated area.