A kettle bell including a weighted mass and a handle or grasping ring extending from an upper portion of the mass, and at least one opening or receiver formed through at least a portion of the mass and/or handle. In example embodiments, the at least one opening or receiver is provided for accommodating interengagement with the end male receivers of a barbell or other exercise device. In other example embodiments, one or more portions of the kettle bell is at least partially deformable or flexible.