Abstract: A storable, reusable-insulating sleeve for a beverage container that provides insulation to the user from hot or cold beverages. The improved sleeve maintains insulation of hot temperatures approximately five and ten degrees higher for a thirty-minute interval, than, for example, cardboard counterpart sleeves. The improved sleeve comprises an integral storage-securing mechanism for storing the sleeve in a compact form. The compact form can easily fit into a pocket, purse, car glove compartment or desk drawer. The sleeve is made of various fabrics and is therefore reusable. Further, a pocket contained in the sleeve will accommodate a prepaid card or a key, for storage, transport and gift giving.