Custom, Fun & Cool {Big Large 18" Inch} 1 Pack of Helium & Air Inflatable Mylar Balloons w/ Graduation Congratulations Grad Text Design [in Red, Black & White] 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.