Hot cups feature a built-in sleeve with thermal insulation that keeps hands safe and beverages hot. Multilayered paperboard cup or container is designed with a corrugated middle layer of tiny air pockets. This patented design insulates air pockets in the cup that slow down the rate of heat loss, keeping drinks hot longer and hands cooler. Because heat does not flow out quickly, it does not easily enter the container either so iced drinks can also be kept cold for longer periods of time. Each offers an Eco-friendly, foamless, solid paper construction. Insulating middle layer is made with a high percentage of recycled material. Insulair lids are sold separately.