Use 0.01um Ultra fltration membrane cartridge, remove 99.999% harmful bacteria like colibacillus, legionella, salmonella. Keep your water safel.
Back flush design: Regularly blow air through Waterstraw after drinking to keep the filters clean and to prevent them from clogging.
Physical filtration, no any chemical inside.
Can be connected with water bag or bottles, it is convenient for many people.
The first sucked water should be spitted out. Avoid use it in the salt water.
Don't put it into the water which is over 50℃.
Please use clean water as far as possible because the pipe can be easily blocked by dirty water.