Glows in the dark. Nite Glow effect activated by exposure to light. Patented US #29,896,946. 38% reduction in plastic usage compared to 14 oz. beer stein. 38% savings in shipping per minimum piece order . Stackable stein allows for compact shipping and reduced shipping costs. Thumb-grip handle, with opening on bottom. Easily stacked for better storage. Durable plastic. Set includes stein, unimprinted straw (70050), and frosted lid. Top shelf dishwasher safe.