PartynBalloon &trade; Cute Cow Farm Walking Animals Pet Party Helium Balloon P0025 Mobile Phone Apps Special Edition PartynBalloon Air Walker Fun Animals playmate is made with high-quality materials, welded seams and special inflation valves designed for long-lasting fun. Each PartynBalloon pet is brought to life by inflating it with helium. Once inflated, it immediately becomes ready for adventures. You only need to refill the balloon pet after 1-2 weeks. Each PartynBalloon Balloon pet is measures about 22 inches length. This animal pet balloon can be filled with hellium for walking effect or just pump with for decoration.