NativeStone® Shield NativeStone® Shield penetrates concrete on a molecular level to create a protective, yet integrated barrier against stains and scratching. While all NativeStone products come pre-sealed, this exclusive sealer is now available for application on heavily used NativeStone sinks or bathtubs to ensure years of protection. Features Clear protective coating for sinks, bathtubs and countertops Preserves concrete from discoloration and wear Highly stain resistant Food safe and non-toxic; approved for use on kitchen and bar/prep sinks UV protection for use outdoors on sinks, planters or sculptures Dimensions 4oz cans for use on sinks and smaller items 8oz cans for use on bathtubs and larger items Easily applied with paint tray and foam brush (not included) Documents Application Instructions, 4oz Application Instructions, 8oz Material Safety Data Sheet, Part A Material Safety Data Sheet, Part B