Nalgene 'Sirotteur'

Ideally to your waterbottle with 5,3 cm opening (don't fit the Nalgene OTF). Simply insert into the neck of the bottle. Solves the problem (the only disadvantage of the wide-necked bottles) that, when drinking, more comes from the bottle, than one can drink. Only infer for filling and cleaning. Polyethylene and in assorted colours.

pour 53 mm, blanc