'Sipper' for Nalgene WM, black

Ideal for adding to your NALGENE wide mouth drinking bottle with 5.3 cm opening (does not fit Nalgene OTF bottles). Simply inserts into the neck of the bottle and makes up for the only disadvantage of wide-neck bottles - namely that when you drink, more comes out of the bottle than you can drink. Remove for filling and cleaning. Made of polyethylene and available in the colors of the bottle caps.