I absolutely wouldn't buy a no-name Chinese water filter. It's all good and well to rely on your estate to bring a lawsuit against an American company but for something drop - shipped from Alibaba you may have few legal remedies. I'll pony up the $15-20 for a real Life Straw or Sawyer Mini.
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“You can tell whether a man is clever by his answers. You can tell whether a man is wise by his questions.” Naguib Mahfouz