Abstract: A container such as a drinking cup includes an inner wall defining a space and an outer wall that preferably includes portions that are translucent and preferably transparent. A thermal mass is provided between the inner and outer walls and has a decorative pattern that is visually discernible through the outer wall. The thermal mass preferably includes a gel material that will not freeze at the normal operating temperature of a household freezer. The gel material includes a multiplicity of globules that preferably have a median diameter that is within a preferred sizing range. The decorative pattern is preferably created by the provision of a colorant material that is introduced within the interstitial space defined between the gel globules.