Foam Filled for a lifetime of use!!! The Higdon Super Mag was created by a true artist and is in a class of its own. Its super magnum size & foam filling make this the ultimate black duck decoy. The upright and relaxed heads both swivel to give you variety in the look of your rig. The foam filling makes this decoy practically indestructible. It is 20 inches beak to tail and is packed with 2 upright drakes, 1 relaxed drake. 2 relaxed hens & 1 upright hen.