Jason Markk Premium Shoe Cleaner 8 Fl Oz Synthetic Unisex Essential Shoe Care Kit OR/ORIGINAL. 4 oz. Premium Sneaker Solution. Does not contain any harsh chemicals or abrasives. 98.3% Natural and completely biodegradable. Safe on all colors and materials. Effectively cleans and conditions. Cleans up to 100 pairs of sneakers. Synthetic NOTE: When cleaning premium leather, suede, cotton mesh and other delicate materials take extra care and be gentle. We highly recommend using our Premium Shoe Cleaning Brush. The softer hog bristles are better suited for use on delicate surfaces.