AquaGuard | Shower Protection for IV lines, Catheters, Ports, Casts and Wounds Protect PICC line in shower, shower with a PICC, PICC shower protection, water guard, shower protector, wound cover, waterproof dressing protector, keep cast dry, shower with a cast AquaGuard moisture barriers make it easy to keep wounds, dressings and intravenous sites dry and reduce the chances of infection so you can shower in comfort.