Powerful enough to protect fabrics in the harshest environment...outdoors. Yet 303 High Tec Fabric Guard restores lost water repellency and stain repellency to new levels. 303 High Tech Fabric Guard resists soiling, impedes mildew formation and helps protect against the sun's harmful UV rays. Use this after you clean your paddling jacket and pants to replace the durable water repellent on the outside fabric. Your gear will bead water again in no time.