
LifeStraw is an instrument which instantly purifies the water and make it ready to drink. A single personal LifeStraw can process 700 liters of water in a year and usage life is 3 years.
It could be a great sybol for developing Africa and actually aid concerts could be made to provide these life saving gadgets for families to people who need.
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The Hippo Roller is a heavy-duty plastic drum that can be filled upright, then sealed and rolled like a steamroller across rough terrain. the 90 liters thank weight 200 pounds when full, but the rolling drum has a functional weight of just 22 pounds, so actually anyone can use it.
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