for drinking flasks 'SmarTube' , for Ø 28 & 30 mmA clever drinking system for use with standard PET bottles (neck diameter 28 and 30 mm) and widemouth bottles (neck diameter 53 mm). In a flash you can covert your bottle in to a complete and inexpensive drinking system. The straw length can be adjusted to the depth of the bottle and the bite valve is easy to suck through. A one-way valve in the stopper provides the air flow.
- Weight 90 g
- Tube length 1 m
- Not for sparkling drinks
- With straight bite valve
- Adapter for 28 mm, 30 mm and 53 mm widemouth