Brand
FLEXTAILReference Price
$56.99 US reference
Reference price; regional pricing and bundles may differ.
Outdoor Gear Details
Product type
Portable sleeping-pad inflator and deflator
Use case
Inflating a camping mat and removing air for packing
Weight / packed size
29±1g without battery; 48±1g with battery; 75±1 × 26±1mm, before nozzle
Weather protection
No stated water-protection rating; keep dry
Capacity / fit
Six nozzle options; check your exact valve before travel
Key Facts
Power / battery
Removable rechargeable 900mAh / 3.33Wh battery; standard battery charges via USB-C
Rated output
3.5±0.2kPa maximum pressure; 200L/min airflow, manufacturer ratings
Runtime
Up to 22 minutes, manufacturer rating; pad and inflation/deflation use affect results
Product Overview
ZERO PUMP 2 is a small convenience for the end of a hiking day: fill the mat while unpacking, then extract air before rolling it away. Its usefulness depends less on headline airflow than on your valve, desired firmness, and willingness to carry a battery-powered extra.
What Stands Out
The battery comes out for charging or replacement. That makes the pump a self-contained alternative to inflators that need a separate power bank and cable during use.
Why It Matters
FLEXTAIL applies miniature electric hardware to a narrow outdoor task. The interesting choice is not adding more functions, but deciding whether a little powered convenience earns its place in a carefully packed bag.
Best For
Backpackers and bikepackers who use an inflatable sleeping pad and value easier camp setup.
Not For
Large air-bed users, tire inflation, or hikers who prefer the simplicity and weight savings of a pump sack.
Things to Know
The 29g headline excludes the battery. FLEXTAIL lists 48g with it; add your chosen nozzle and any charging cable when comparing packed weight.
Check the exact sleeping-pad valve, not just its brand. You may still need a final breath or pump-sack top-up for your preferred firmness.
Treeline Review filled a full-length pad in 65 seconds but obtained fewer cycles than the advertised 30 when also deflating. Plan around your own pad rather than a maximum count.
A direct comparison on Ultraleicht Trekking found no speed gain over the original on one large Klymit mat. A working first-generation pump may not need replacing.
The $56.99 figure is a US store reference dated August 30, 2026. Check kit contents and regional support. Low-temperature spare batteries may lack a charging port; do not assume every battery variant charges the same way.
No water-protection rating is stated in the product comparison. Keep the pump dry and confirm replacement-battery compatibility before a trip.
Sources
Official product and specifications
flextail.com
Covers
Second-generation dimensions, separate battery weights, pump ratings, battery variants, and kit options.
FLEXTAIL brand story
flextail.com
Covers
The brand's focus on lightweight electric outdoor equipment.
Company history
flextail.com
Covers
Early product development and the team's move to Shanghai; French-language company history.
Treeline Review comparison
treelinereview.com
Covers
ZERO PUMP 2 pad-inflation testing, battery charging, and comparisons with power-bank-driven pumps.
Ultraleicht Trekking comparison
ultraleicht-trekking.com
Covers
An owner's measured component weights and same-mat comparison with the first generation; German-language report.
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