Sidekick 3-Stage Straw Water Filter

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Whether you are hiking, camping, backpacking, or just need a solid backup water filter, the Sidekick 3-Stage Straw Water Filter by HydroBlu is your perfect adventure companion. The 3-stage water filter provides the most robust filtration of any straw style filter.

The easy to use Sidekick protects you from bacteria, chemicals, heavy metals, and other contaminates. Large sediment is blocked with the cotton pre-filter membrane, increasing the longevity of the filter. Nasty chemicals and heavy metals are adsorbed by the Activated Carbon Filter. Activated Carbon removes lead, iron, cadmium, nickel, chromium, and zinc along with chlorine, pesticides, herbicides, gasoline, and diesel fuel. Once the pre-filter and Activated Carbon filters have reached their life expectancy of 50 gallons, they can simply be replaced with the extra end cap filter which is included. Finally, the Ultrafiltration Hollow Fiber removes 99.999% of bacteria. Hollow Fiber is made of dozens of tubes that have microscopic holes (0.1 microns) that don’t allow bacteria to pass through, while allowing clean water through by size exclusion technology.

Regardless, if you are running on the trail or backcountry skiing the lightweight design of the Sidekick won’t slow you down as it only weighs 1 ounce. It can fit perfectly into your pocket, day pack, or emergency kit. No matter where you go it’s always better to take your Sidekick with you.


  • Removes bacteria, such as Giardia, E coli, cryptosporidium, and more
  • Removes heavy metals such as lead, iron, cadmium, nickel, chromium, and zinc
  • Removes chemicals such as chlorine, pesticides, herbicides, gasoline, and diesel
  • Perfect for camping, backpacking, scouting, hiking, and for emergency situations or emergency preparedness
  • Weighs only 1 oz.
  • Size: .7" wide x 6" tall

Manufactured by HydroBlu

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  • 5
    Sidekick water filter

    Posted by Derrick on Apr 19th 2019

    The Sidekick is a lightweight water decontamination option. I keep one in my Posse EDC Sling Bag and one in my pocket as my EDC. You won't be disappointed when purchasing one.

  • 5
    Love the size and the quality of filtration. Have then in all of my survival and ditch kits.

    Posted by James Robertson on Apr 18th 2019

    Will be buying more

  • 5
    Sidekick filter

    Posted by victoria maki on Apr 18th 2019

    Received my filter, but since I live in Minnesota, I have not tried it in the field. I tried it at home and was very happy with the flow. Can't wait now to get out there.....

  • 4
    Sidekick water straw

    Posted by Todd Skartved on Aug 28th 2018

    Great item to have on the side by side perfect size stores anywhere

  • 5
    Perfect Size

    Posted by Marshal Thomoson on Apr 9th 2018

    I got this in the mail yesterday and I love it. the package was the perfect size for this item. thank you

  • 5
    Five Stars

    Posted by Jason Eldreth on Mar 17th 2018

    Works well, compact enough to just put in your pocket.

  • 5
    A game changer on the trails!

    Posted by Emily West on Feb 24th 2018

    A must have for any hiker! I hate adding any unnecessary weight to my pack so this filter was just what I was looking for! Small enough to fit in your pocket, lightweight, and easy to use. The Sidekick is a game changer, I never hike without it!

  • 5
    Ready to go

    Posted by Debra Young on Feb 16th 2018

    Looks like it will be great for my Bug out bag, Looks very easy to use and was in pack ready to use. Have not tried it out yet because want to use for when I need it.

  • 5
    3-Stage Water Filter Straw- A Must Have

    Posted by Daura Young on Feb 14th 2018

    I have a tactical bag with a list of items that I want to fill it up with. This is seriously at the top of the list. Wherever you go there is an access to a water stream that regardless you can tap with this filter straw. I carry my tactical bag everywhere with me in the car and have it on hand just in case of an emergency. It came in a sealed package, it has all the information on usage and it is easy to clean.

  • 5
    Essential item

    Posted by Mathieu Godin on Nov 1st 2017

    The sidekick is an essential item to carry in your grab bag whether for use in the city or the wilderness. In a survival scenario, water is more important than food as you can survive approximately 3 weeks without food but only 3 days without water. This item is convenient to carry as it is small and practically weight nothing. You can use the Sidekick on its own by drinking directly in a water source or can collect water in a recipient and drink it at a later time. Either way, by using the Sidekick the water will get properly filtered as you drink it.

  • 5
    Worth it!

    Posted by Dillon Buck on Sep 24th 2017