Clean, Safe Water. Made Simple.
The Sidekick 3-Stage Straw Water Filter is built for the moments when you need dependable water fast—without slowing you down.
Lightweight, compact, and easy to use, Sidekick delivers advanced 3-stage filtration in a streamlined design that fits easily into your pocket, daypack, running vest, or emergency kit. Whether you’re hiking, trail running, camping, traveling, or preparing for the unexpected, Sidekick gives you confidence to drink from questionable water sources with less worry and less hassle.
No pumping. No bulky setup. Just clean, safe water wherever adventure takes you.
Advanced 3-Stage Filtration. Simplified.
Sidekick combines three layers of filtration to improve both water safety and drinking experience.
Stage 1: Sediment Pre-Filter
The cotton pre-filter helps block larger particles and sediment before they reach the main filtration system, extending filter life and improving performance over time.
Stage 2: Activated Carbon
Activated Carbon helps reduce:
- Chemicals
- Heavy metals
- Chlorine
- Pesticides and herbicides
- Bad taste and odors
The result:
Cleaner, fresher-tasting water you’ll actually want to drink.
Stage 3: Hollow Fiber Ultrafiltration
The hollow fiber membrane uses microscopic pores (0.1 microns) to help protect against harmful bacteria through advanced size exclusion technology.
Helps protect against:
- 99.999% of harmful bacteria
- Contaminants commonly found in backcountry and questionable water sources
Ultralight & Adventure Ready
At only 2 ounces, Sidekick is designed to go anywhere without adding unnecessary weight or bulk.
Perfect for:
- Hiking
- Backpacking
- Trail running
- Backcountry skiing
- Camping
- Travel
- Emergency preparedness
Slip it into your gear and forget it’s there—until you need it most.
Built for Simplicity & Dependability
The Sidekick is designed to make safe water easier in real-world conditions. When the pre-filter and Activated Carbon filter reach the end of their lifespan, they can be quickly replaced using the included replacement end cap filter.
Simple maintenance. Dependable performance. Long-lasting confidence.
Because clean, safe water should never feel complicated.
Product Weight: 1 oz.
FEATURES & BENEFITS
Advanced filtration helps protect against harmful bacteria including Giardia, E. coli, and Cryptosporidium—giving you dependable hydration from questionable water sources.
Activated Carbon filtration helps reduce heavy metals such as lead, iron, cadmium, nickel, chromium, and zinc for cleaner, better-tasting water.
Helps reduce chlorine, pesticides, herbicides, gasoline, diesel fuel, and unpleasant odors so your water tastes fresher and more enjoyable to drink.
Perfect for camping, backpacking, hiking, scouting, travel, and emergency preparedness without adding unnecessary bulk to your gear.
Weighs only 1 oz. so it fits easily into pockets, daypacks, hydration vests, and emergency kits.
Dimensions: 0.7" wide × 6" tall for dependable filtration that’s always within reach.
Manufactured by HydroBlu
42 Reviews Hide Reviews Show Reviews
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Great Product!
I had been looking at different filter straws for a while for traveling and this filters a greater amount than the others I saw. This is definitely going to be in my backpack whenever I travel!
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Handy...
This is the first item I ever heard of from Hydroblu. I saw it on a YouTube video; then searched for it. I haven't used it yet, but I'm confident that it will perform as described. These are a great addition to miniaturized survival kits.
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One of the best.
I've been using these kind of filtration straws since a long time from Sawyers to Lifestraws and what makes the hydroblu different is that sucking in the water isn't that hard. other fatter straws take a lot of effort to drink from, this one is quick, nice and easy. Also, takes up much lesser space in my Bugout bag (Yes, I made one after covid). I would highly recommend these Hydroblu straws, get some additional filters while you're at it.
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It’s so small!
Fits perfectly in my max position pouch. I haven’t used it yet but I’m sure I’ll love it when I do.
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Compact survival...
The sidekick straw is very light, compact and easy to use.
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Hard to suck!
I have used a few filter straws, although none as small as this. I think because it's so thin it's very hard to get a decent mouthful of water, even when sucking very hard. It would take a lot of time & effort to quench your thirst using this straw. I tested it with tap water first & this is what I am basing my review on, once the filter gets clogged up with impurities I imagine it will be even harder?
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Highly recommend.
Very compact and ingenious design. Carry it with me as part of my edc kit. Very impressed with its ease of use. Much easier than other similar devices.
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The Best ultralight giver of life... No more...
Hydroblu Sidekick... My new fastpacking, trail running, sportwalking buddy. I can rehydrate from a trickle, puddle recess in a rock etc, either directly or with no effort using the soft cup to scoop with
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good...
This water filter is good.
