303 Fabric Guard keeps outdoor fabrics fresh, soft, colorful and breathable all while adding a powerful coating to repel water and prevent the most serious of stains. 303 Fabric Guard is the only product recommended by and for Sunbrella, as well as other fabric manufacturers to restore lost water repellency to fabrics. Use it to keep your outdoor pillows, cushions and rugs clean and blemish-free. You can even spray it on your fabric convertible top to repel moisture and stains.