Abstract: A projecting structure is integrally formed with a neck of a bottle or preform, or with a closure. The projecting structure comprises a ring-like element that extends around the neck or closure body and is supported therefrom by a plurality of discrete web formations. Adjacent web formations define in the projecting structure an optionally elongate aperture therebetween.

Abstract: A closure for closing over the opening of a bottle comprises a body attachable to the bottle and at least one projection that projects out from the body. An in-use underside surface of the projection has an ergonomic curvature whereby a user's finger F can be closely received against the underside surface in use. A plurality of discrete apertures extend through the one or more projections and are located around the closure. Alternatively, the one or more projections with optional discrete apertures are located to projects out from the bottle.