Proozy offers the LifeStraw Personal Water Filter 3-Pack for $69.99. Apply coupon code "CLEANWATER" to knock that to $30. With free shipping, that's the lowest price we could find for the quantity today by $14 and, at $10 each, the best per-item price we've seen. (For further comparison, we saw individual filters for $13 two weeks ago.) These award-winning, BPA-free devices enable you to safely drink contaminated water. Each filter removes almost 100% of waterborne bacteria and protozoan parasites and will filter up to 1,000 liters of water.