303 Marine Fabric Guard - 1 Gallon303 Marine Fabric Guard 1 Gallon Restore lost water repellency and shield your marine fabrics with 303 Fabric Guard. This trusted fabric protector is the only product manufacturers recommend to bring fabrics back to factory level repellency, so you can resist water and stay protected on the water and beyond. 303 Marine Fabric Guard creates a powerful shield that greatly increases repellency and defends against oil and water based stains. When applied