SteriPEN Ultra

SteriPEN Ultra
Rechargeable & OLED display!
50 treatments per charge.

SteriPEN Adventurer Opti

SteriPEN Adventurer Opti
Lightweight & high tech.
Backpacker Magazine
Editor’s Choice!

SteriPEN Classic

SteriPEN Classic
The latest version of the original!
Includes pre-filter.

Purifying water for hiking, camping, and outdoor adventures since 2001!
Thousands of outdoor enthusiasts all over the world have trusted SteriPEN for many years. SteriPEN’s patented UV water purification technology was first introduced to hikers and campers at REI in 1999.


Spending lots of time outdoor? The outdoor line keeps you hydrated when on the go. Outdoor SteriPENs treat up to one liter of water, last for 8,000 treatments, and are powered by internal rechargeable, CR123 batteries, or AA batteries.

Compare SteriPEN Models

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Testimonials & Awards

We have cycled thousands of kilometers, from the United States to El Salvador and we have used our SteriPEN Adventurer Opti every day while riding to purify our drinking water.
Nico El Salvador
Andrea Rees
Loving my Freedom @SteriPEN, what a difference and that's just in Paris & Nice so far! Love that I can get clean water anytime, anywhere.
Andrea Rees Paris, France
Lea Conlon
During our 5 week Hugging the Coast Kayak Expedition (research on seaweed) in northern Sulawesi, Indonesia we use used our SteriPENs every day!
Lea Conlon Indonesia
Peter Rice
Steripens work like a charm.. the only problem was our extremely jealous ranger who was amazed by the pens and how well they worked!!!
Peter Rice South Africa

Awards & Certifications View All Awards


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