US Patent 10017301 Insulated cap

Container assemblies including an insulated cap for sealing the mouth of the container, the insulated cap including an outer shell, an insulation block defining a plurality of elongate voids disposed at least partially within the outer shell, a securing element configured to secure the cap to the container, and a sealing member configured to form a seal between the insulated cap and the container when the insulated cap is secured to the container by the securing element.