These are New Red Can Kozzies. Can holder / cooler fits most car drink holders. Fill the bottom with ice or freeze with water. Insert your can, slip on the gasket top. They will insulate your drinks even without ice. Gasket holds can and ice/water inside the cup. Remove the gasket top and use as a cup. Cup measurements: Across bottom 2 1/2", Lip rim 3", Overall height 5 3/4", Gasket lid width 4 1/4". These are top rack dishwasher safe. Genuine Koozie Ice Tub. Made in USA.