... ,eco-friendly idea to replace the old plastic tap water bottles,easily fitting into pockets,purses and packs,specially for ... ,making it stand up well when fill in the water.4.Can be roled,folded or flattened when empty, ... ,then shake 10 times,then fill in the clean water to shake more times.Question 2:If that bottle ... using and Caution:1.Do not fill in the water more than 60°C in order to avoid hurting ...