30 ounce maximum capacity tumbler is much more suitable for outdoor use and picnic. Ultra large volume can support your almost whole day drinking. Our items feature nearly unbreakable and lightweight polymer, double wall heat insulation, which is perfect for better holding experience every day. And high-grade polymer material is applied to the tumbler body, means it can be personalized for every sublimation high resolution image with HSB solution. Our tumblers can meet different country standard according to EU criterion, Regarding BPA and other harmful substance released to make sure our items are qualified and safe to import.