Dubon Water Filled Teether, Star by Dubon. $3.99. Dubon water filled teether is designed with little hands in mind. It is easy for baby to grasp and shake. Teether is made from durable material and is designed and tested for safe play. Water used for teether is purified through reverse osmosis, which is safe for babies. Teether may be refrigerated to provide cooling for babies gums.