Recommended by & for Sunbrella /Glen Raven Mills Inc. Restores lasting water repellency to marine canvas. It stops leaks protects against soiling and both water & oil based stains and resists mildew formation and UV sun damage. Spray on let dry. Your best choice for fabric upholstery carpeting & breathable wet weather gear. 16 oz. trigger sprayer treats 75-100 sq. ft. of marine canvas.