Abstract: The present invention is directed to buoyant, water-resistant sport luggage for various items. The portable sport luggage includes two hollow cylindrical members with their side walls forming conical threads, such that the members may be threaded securely together to form a compartment that provides buoyancy to the sport luggage as well as contain selected utility items. Either one or both hollow cylindrical members may include an apertured tab member with the tab member served to a closed-end member. The apertured tab member is suitable for attaching the portable sport luggage to another object or for use as a lanyard or handle depending on the size of the sport luggage.