Upgrade your drinkware game with our premium 30oz/900ml stainless steel tumbler set. This pack of four tumblers is perfect for personalization with its large design space and 100% polyester smooth finish. The double-walled construction and narrow ringneck bottom keep drinks at the perfect temperature and fit comfortably in most car cup holders. Our tumblers also feature superior sublimation coating for vibrant and long-lasting designs. These tumblers are compatible with sublimation ovens and sublimation paper, and are perfect for use with our Craft Express Tumbler Press and Convection Oven. Please note, hand washing is recommended and protective gloves should be worn when sublimating. These tumblers are not intended for use by children.