These wool scrubber sponges are constructed using 100% natural colored 1/8” or 1/2" thick wool felt fabric, a biodegradable, sustainable material that outlasts many synthetic fiber products. Over time the sponge will condense, becoming coarser and scrubbier. Once worn, these wool scrubber sponges are compostable. Wool scrubber sponges are also naturally odor repellant, antimicrobial, antifungal, and moisture wicking. They are great for everything from washing dishes to damp cleaning your car dashboard to staining wood furniture.  Hand washable and air dryable.