Prevent valuables from falling down and open hole. Born of necessity; Catch Cover's Safety Cover keeps cell phones, keys, pets, and kids from falling in an open fishing hole. The Safety Cover rests in the Catch Cover ring and works with or without Hole Sleeves. The injection-molded honey-comb design makes it strong, while maintaining airflow so the hole doesn't ice up. You can fish with Safety Cover in-place; and it has a built-in base to use with our Rattlesnake Reel.