Abstract: An insulating sleeve for a beverage container is provided. The sleeve is constructed from at least two layers of fabric, and has an integral pocket incorporated between the two layers. Two elasticized fleece fabric panels, each having a rectangular body area and a pocket extension, are joined at their edges and then attached at their ends to form the sleeve. The pocket extensions are folded down between the two elasticized fleece fabric panels to form the integral pocket. The insulating sleeve has indicia affixed to its outer surface. The sleeve provides a beverage cup insulating sleeve that is easily positionable on a beverage cup, and that will remain in position without adjustment. It can be machine washed and used repeatedly, instead of thrown away after use. The sleeve can adapt itself to fit a variety of container shapes, and can be folded compactly for storage when not in use. Additionally the pocket provides a way of keeping a punchcard with the sleeve.