#Sip from any river, stream or lake with this incredible straw — it’s $9 off today at Amazon

Having clean water handy is crucial at any time. But, when you’ve been hiking or camping for days, it’s not as simple as turning on the tap. That’s where the Membrane Solutions straw comes in. This portable water filter lets you drink just about anything, filtering out the gunk so you only sip clean, safe H2O. And, just for today, you can score a two-pack at Amazon for $9 off. (Want more straws? Amazon has a slew of Membrane Solutions options on sale ’til midnight.)

The straw contains a microfiltration membrane that removes 99.999999% of waterborne bacteria, and 99.999% of waterborne parasites. The filter also removes the smallest microplastics found in the environment, and reduces turbidity down to 0.2 microns.

You use this like any other straw. Simply remove the cap, place one end of the straw into water you come across in nature, and suck. The hollow fibers inside the straw trap pathogens, so the only thing that touches your lips is clean, safe, drinkable water.

This straw also lasts. The microbiological filter will provide 5,000 gallons of clean and safe drinking water, as long as you use the straw the way it was designed and maintain it. And, if you’re taking it camping, it won’t weigh down your pack: Each straw weighs just two ounces.

People rave about this straw in the reviews, with many comparing it to the popular LifeStraw. “This is such a great price! Same as a LifeStraw, same quality, function, just at a much better price!” a five-star fan said. “A must-have for anyone! Whether it’s to take camping, keep in your car or to stick away in case of emergencies, you should get this.”

“I survived four days on a river using this straw and happy to report no symptoms, odors or funny taste,” another happy customer said.

If you have Amazon Prime, you’ll get free shipping, of course. Not yet a member? No problem. You can sign up for your free 30-day trial here. (And by the way, those without Prime still get free shipping on orders of $25 or more.)

Again, this sale is only for today. Snag this four-pack for you or the outdoor adventurer in your life at a sweet discount while you still can!

The reviews quoted above reflect the most recent versions at the time of publication.