Custom, Fun & Cool {Big Large Size 12&rdquo; Inch} 8 Pack of Helium & Air Inflatable Latex Rubber Balloons w/ Happy 4th Birthday Design [in: Variety Assorted Multicolor] MATERIALS: This item is only made of the best and highest quality materials available to the manufacturer. WARRANTY: These products have a lifetime warranty that is guaranteed by the manufacturer. This means that if the products come with a manufacturer defect upon opening the package you may request replacement from the manufacturer.