He stemians greetings success for us all ... today I discuss about the problem of reducing waste ... 
This drinking water bag is installed directly into his school bag. "My sister wants to participate in reducing plastic waste by bringing her own drinking water from home"
Cheap, festive, practical, hygienic and lightweight.
It is nice to see, if not every time I go home from school there is always a bottle of mineral water that is purchased and thrown away and becomes garbage in this house. Let's do it...
This is nice.
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thanks for the information
You're highly welcomë