303 Products Canvas & Fabric Cleaners / Protectants / Waterproofing
Representative Photo, actual item may vary
Representative Photo, actual item may vary
303 Products: The Gold Standard for Canvas & Fabric Protection
When it comes to protecting canvas and outdoor fabric from the elements, few brands have earned the trust that 303 Products commands. Founded in 1980, 303 built its reputation on aerospace-grade protection science — and that same commitment to high-performance chemistry carries directly into their line of canvas and fabric cleaners, protectants, and waterproofing products.
303 Fabric Guard: Purpose-Built Waterproofing
The flagship product in this category is 303 Fabric Guard, a high-tech waterproofing spray that has become the benchmark for outdoor fabric protection. What sets it apart is a noteworthy distinction: 303 Fabric Guard is the only fabric guard product recommended by Sunbrella® — the industry-leading outdoor fabric manufacturer — for restoring lost water and stain repellency to their fabrics. That kind of third-party manufacturer endorsement is rare and speaks volumes about the formula’s effectiveness.
Unlike silicone-based repellents that can attract dust and soil, 303 Fabric Guard uses a silicone-free formula that repels water, oil, grease, and dirt without leaving a tacky residue — and it can last up to three years on low-traffic fabrics, far outlasting many competing treatments. Critically, the formula does not alter fabric color, breathability, feel, or flammability, making it safe for everything from heavy cotton duck canvas to fine silk.
Where 303 Fabric Protection Shines
303’s fabric care products are especially popular in marine and automotive applications. Boaters rely on 303 Fabric Guard to protect bimini tops, boat covers, Dacron® sails, and enclosures from constant moisture exposure. Convertible top owners use it to keep canvas and soft-top fabrics sealed and water-tight. The protection extends equally well to RV awnings, patio furniture, umbrellas, tents, and outdoor cushions — anywhere that fabric faces prolonged weather exposure.
- Restores lost water and stain repellency to factory-new levels on weathered outdoor fabrics
- Protects against both water-based and oil-based stains, soiling, and mildew formation
- Safe for natural and synthetic fibers including canvas, acrylic, polyester, nylon, silk, and suede
- Does not affect breathability — critical for foul-weather gear and marine canvas
- Made in the USA, with coverage of up to 40–75 sq. ft. per 16 oz. bottle depending on material
Pair Cleaning with Protection
For best results, 303 recommends pairing Fabric Guard with 303 Multi-Surface Cleaner — an industrial-strength concentrate that safely removes even stubborn stains from water-safe fabrics and surfaces. Pre-cleaning before re-treating is essential for allowing the protectant to bond properly and deliver maximum water repellency. Together, these two products form a complete clean-and-protect system trusted by marine professionals, RV owners, boaters, and detailers alike.
Whether you’re maintaining a canvas convertible top, refreshing boat canvas after a long season, or preparing patio furniture for year-round outdoor use, 303 Products delivers a proven, science-backed solution in the canvas and fabric cleaner, protectant, and waterproofing category that few brands can match.