Abstract: Covers for containers and specifically, beverage containers are disclosed herein. According to one embodiment of the invention, a cover has a breathable membrane and a peripheral rim. The membrane is substantially planar in shape and has a length and width to substantially cover a top opening of a beverage container. A plurality of orifices extend through a top surface toward and through a bottom surface of the breathable membrane, and are sized and shaped to allow air to pass therethrough, but are sufficiently small to prevent external contaminants such as leaves and insects, for example, from passing through the membrane. The peripheral rim is sized and shaped to receive an upper portion of a rim of the container, and be releasably attached thereto. Thus, the cover provides means for enjoying beverages such as wines requiring breathing prior to consummation, carbonated drinks, and other beverage, in the outdoors.