Custom, Fun & Cool {Big Large 11"-18&rdquo; Inch} 10 Pack of Helium & Air Inflatable Mylar/Latex Balloons w/ Mermaids Stars Under the Sea Design [in Coral & Blue] w/ Ribbon & Weight 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.