Gear Aid’s Aquaseal FD is a fantastic product. I’ve been using it for years. It has extended the life of numerous waders and served as a trip-rescuer multiple times. I’ve used it on both neoprene and breathables. It’s inexpensive, easy to use and store (pro tip: keep an opened tube in the freezer to extend its life) and it does what it’s supposed to do. What more could you ask from a product? Highly recommended.