This Kappa Delta Tumbler makes it easy to stay hydrated while on-the-go or hitting the books! No need to worry about getting thirsty - this baby can hold enough H2O to keep you going all day long! Plus, it's got Phi Mu style for a chic and spirited look. Officially licensed product. 30 oz Stainless steel cup Insulated double wall with vacuum seal. Lids and cup are top-rack dishwasher safe. How are they printed? It's magic basically, but if you want the scientific answer... The process is called Dye Sublimation. Artwork is printed onto a sheet of high-release paper and transferred onto the substrate using heat and pressure. Heat converts the solid dye particles into a gas — known as sublimation — and bonds them to the surface. The dye is absorbed into the material creating a smooth, and machine washable finish.