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Welcome to The Gear List, a semi-regular series where we spotlight the best discounts and deals on tactical equipment, outdoor gear, and everything in between.

Today marks Amazon Prime Day 2021, and as part of Task & Purpose’s mission to bring you the best deals and discounts we can find on the gear that matters most, we thought it’d be worth highlighting one piece of kit in particular: the Lifestraw personal water filter.

Whether you’re plotting your next outdoor adventure or even gearing up for a deployment, a LifeStraw personal water filter can make an excellent addition to your arsenal, protecting against Protects against 99 percent of bacteria (including E.coli, Salmonella), 99 percent of parasites (including Giardia and Cryptosporidium), and 99 percent of microplastics (as well as sand, dirt, and cloudiness) in your water supply.

The system itself is elegantly simple: weighing less than two ounces, designed with a long-lasting membrane microfilter, and operated through suction at a rate of 3 liters per minute, the LifeStraw will accommodate up to 4,000 liters of water — enough drinking water, according to the company, to keep an individual hydrated for up to five years.

Most importantly, the LifeStraw has been rigorously tested and the system meets Environmental Protection Agency and NSF P231 standards for the removal of bacteria and parasites. It’s also BPA-free and chemical-free by design, which is an added bonus.

For more on the LifeStraw and today’s Prime Day discount on the item, visit Amazon here. For more incredible Prime Day deals and discounts, visit our hub here.