SteriPEN Classic’s tapered end provides a snug fit with water bottles, and with the SteriPEN Fits All Filter, works even with wide-mouth water bottles.
The Classic with Pre-Filter pack is all that is needed when camping, hiking, backpacking or traveling is all you need if you all ready own a wide-mouth 1 liter water bottle. Use the 40×40 micron screen Pre-Filter to remove particulates from the water. The Pre-Filter is designed to be stored directly on the wide mouth bottle.
Purchase Options & Documentation
Get an early start with your new Classic!
Download the Classic user guide in your language of choice: en | fr | es | de
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.
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.
During our 5 week Hugging the Coast Kayak Expedition (research on seaweed) in northern Sulawesi, Indonesia we use used our SteriPENs every day!