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Flextail ultralight gear: what its pages say and what they skip

Weights, battery figures and warranty terms from Flextail's own pages, with the gaps marked.

Short answer. Flextail's pages state a weight for nearly every small item: 48 g for the Zero Pump 2 with its battery, 67 g for the Tiny Pump 3X, 56 g for the Zero Lantern. They state none for the Zero Pillow. Every performance number is the maker's own, and no independent test is on the pages we read. The pages also disagree with each other in small ways, and the warranty covers only gear bought from flextail.com. Whether any of it earns its grams depends on what you already carry, which our grams page works through.

This page is for a backpacker who has already cut base weight once and does not want to add junk. We read Flextail's public product pages, policy pages and menu on 2026-11-01 (flextail.com). We have not tested any Flextail product. Where a page gives a number, we say it is Flextail's number.

What Flextail sells

The site menu lists these product lines: power banks, sleeping pad pumps, storage (vacuum bags), lighting, air dusters, tire pumps, sleeping pads, mosquito repellents, SUP pumps, outdoor showers and accessories. It also has a shop-by-interest list that includes camping and backpacking. For a backpacker, the lines that matter are the sleeping pad pumps, the sleeping pads, the lights and the power banks. We did not assess the tire, bike, SUP, air duster or repellent products. We did not read any independent evidence on how well the repellents work, so we make no claim about them.

What the pages state, item by item

ItemWeight statedOther specs statedWhat the page leaves out
Zero Pump 229 ±1 g without battery; 48 ±1 g with battery75 x Ø26 mm; 3.5 kPa; 200 L/min; 22 min run time; 3.33 WhConditions behind the run time; pad size behind the 30-pads-in-a-row feature tile
Tiny Pump 3X67 g (2.36 oz)44 x 44 x 59 mm; 5 kPa; 300 L/min; 20 min; 3.89 Wh; lamp up to 400 lm; maker says 100+ inflations per chargeWhether the 67 g includes the battery; pad size and temperature behind the inflation count
Tiny Pump 2X100 g (3.5 oz)45 x 46 x 59 mm; 4 kPa; 180 L/min; up to 30 min; 5.92 Wh; IP44Whether the weight includes the battery
Max Pump 3122 g (4.3 oz)84 x 48 x 48 mm; 5 kPa; 500 L/min; up to 60 min; 7.215 WhWhether the weight includes the battery
Zero Lantern56 g (1.98 oz)300 lm; up to 35 h; 1,100 mAh (4.07 Wh); IPX5Which mode the 35 hours is measured in
Tiny Helio 2025 headlamp62.4 g (2.2 oz)600 lm; 1 lm lowest mode; up to 100 h; 700 mAh; IP67; 100 m beamWhich mode gives the 100 hours
Zero Power 5,000C85 g (3 oz)5,000 mAh (18.5 Wh); rated capacity 2,950 mAh; 5V 1.6A output; 20W inputWhy two capacity figures are shown; how many phone charges you get
Tiny Sleeping Pad R03 (regular)572 g with pump183 x 65 cm; R-value 3.5Packed size in the spec block
Zero Mattress R05 (regular)710 g (24.3 oz), pump sold separately183 x 65 x 7 cm; R-value 5.6; packed Ø13 x 27.5 cm; 150 kg limitThe page shows an ASTM mark but we found no test report
Zero Pillownot stated17.3 x 11.4 in; height 3.1 to 5.1 in; bag 7.8 x 4.1 inWeight
Horizontal bar chart of weights Flextail states: Zero Pump 2 48 g, Zero Lantern 56 g, Tiny Helio headlamp 62.4 g, Tiny Pump 3X 67 g, Zero Power 5,000C 85 g, Max Pump 3 122 g, Tiny Repeller 151 g, Tiny Shower 200 g.
Weights as each Flextail product page states them; the Zero Pump 2 bar is the with-battery figure. Maker figures, not our measurements. Source: flextail.com, read 2026-11-01.

Where the pages disagree or go quiet

Warranty and returns, as Flextail writes them

We read both pages on 2026-11-01. Rules like these change, so check them before you buy.

What customers say on the product pages

These are reviews on the maker's own site. We cannot check who wrote them. On the Zero Pump 2 page (60 reviews, read 2026-11-01), people praise the size and the replaceable battery. Others report that the aluminium housing threads are easy to cross-thread, one pump arrived without its battery spring, one stopped working after a single use, and two said the warranty team was slow to answer. One reviewer called it noisy and said it did not fill the pad to a firm pressure. On the Tiny Pump 3X page (83 reviews), a reviewer on a week-long trip wrote "The weight penalty for my kit is almost negligible" because it replaced a stuff-and-inflate sack and a tent light. Another reviewer said the kit has no carry pouch. A third said they pressed the pump when they meant the light. Read the reviews before you decide. They are the closest thing to outside evidence on the pages.

The simpler option

If your air pad already came with a pump sack, or you sleep on a foam pad, none of this is needed. Therm-a-Rest's NeoAir XLite NXT page lists a pump sack in the box, and its Z Lite SOL foam pad needs no inflation at all. We lay out the rivals in Flextail against a pump sack, a foam pad or your lungs.

Who it fits, in our reading: someone who blows up their pad by mouth, wants hands-free inflation, and will accept the maker's numbers as claims.

If you decide a Flextail pump is worth the grams

Our reason to click: both pages state weight, pressure, airflow and battery watt-hours in one spec block, so you can check the numbers above yourself.

We earn a small commission on qualifying sales, and 90% of it goes to charity (you can pick which); your price is unchanged. Full disclosure.

Zero Pump 2The lightest pump Flextail lists: 48 g with battery, 3.5 kPa, 6 nozzles.View at Flextail →Tiny Pump 3XPump plus lamp, 67 g, 5 kPa, 300 L/min.View at Flextail →
The Flextail links on this page are affiliate links. We earn a small commission on qualifying sales, and 90% of it goes to charity (you can pick which); your price is unchanged. Full disclosure.

Next steps

The grams questionPump, pad and pillow against what each replaces.Which Flextail pumpSix pumps from Flextail's own spec pages.Pump sack, foam pad or lungsWhen Flextail is the wrong buy.Base weight calculatorAdd the gram figure to your own list.

Sources