A cross base to weigh feather flags down. Like the name suggests a cross base is a feather flag base that is shaped as a cross. The cross base can be used on any flooring, however is best suited to hard, such as concrete and wood. Water ring is to be used in conjunction with a Poolesia Wood Water Bag to add an extra weight to feather flags. Our water filled bags are round water bags to be used in conjunction with your zoom lite Poolesia Wood Water Bag. Simply fill with water and slot over your Poolesia Wood Water Bag, to add stability to your flag.