sawyer.com,  $34.99

Removing cholera, cryptosporidium, E. coli, giardia and salmonella from the water you’re about to drink could mean the difference between experiencing safe hydration or suffering. The filtration system in the Sawyer water bottle gets as close to guaranteeing the former as possible.

The simple-to-use system includes a 24-ounce BPA-free Tritan bottle, a cap that fits standard wide-mouth bottles, the dual threaded Mini Filter and a backwashing syringe. Altogether, it’s 9.5 inches tall and 3 inches wide, and weighs 7.5 ounces.

The bottle features a 0.1-micron absolute hollow fiber membrane filter. It removes 99.9% of all bacteria and protozoa and bacteria and 100% of microplastics—so you can fill the bottle and drink instantly from freshwater lakes, streams or rivers during domestic and international travel. 

It’s an ideal companion while backpacking, camping, hiking and walking and for emergency preparedness. It filters as much as 100,000 gallons of water and is easily cleanable and reusable.