Drinking water from a stream or river probably isn’t all that good of an idea — unless you have a LifeStraw Personal Water Filter, that is. And now you can add one to your own outdoor gear and save 40%. That means you’ll pay just $12 instead of the usual $20.

We all know that there can be all kinds of nasties in water, but the LifeStraw Personal Water Filter can remove 99.999999% of waterborne bacteria, including e-coli and salmonella. On top of that, it’ll also get rid of 99.999% of waterborne parasites too.

As if that wasn’t enough to make this a great way to keep you and your loved ones safe when drinking water, the LifeStaw filter goes one step further. This thing can also remove the smallest microplastics, and the whole thing will run for 4,000 liters (1,000 gallons) without needing to be replaced.

Need to stock up on more than one LifeStraw filter? There are packs that go all the way up to five in one box, but do note that the discounts aren’t all the same. That pack of five filters still saves you plenty, though — the normal $80 price falls to just $59 with a saving that equates to a solid 26%. There are different colors available as well, perfect for those who want to make sure their water filter matches the rest of their setup.

There’s no indication of when these special prices will come to an end, so consider placing your order soon to make sure you’re all kitted out for your next trip into the great outdoors.