So sorry, but only 4 items are allowed for comparison, so we're comparing the first 4. I blame the gnomes and so should you.
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The Classic with Pre-Filter Pack by SteriPen is all that is needed when camping, hiking, backpacking or traveling. Use the 4 micron screen Pre-Filter to remove particulates from the water. Note, the Pre-Filter is designed to be stored directly on the wide mouth bottle. Ships with neoprene carry case and User's Guide.
SPECIFICATIONS of the Classic with Pre-Filter Pack by SteriPen