The Terra Incognita FastPump is a 40L ultralight dry bag that doubles as an air pump, letting you inflate a camping mattress in seconds and then seal your gear away 100 percent waterproof - all from one 4.2 oz (120 g) piece of kit. Instead of carrying a separate electric pump or blowing your mattress up by mouth (which pushes warm, moist breath into the pad), you scoop air into the bag, roll the top, and squeeze the captured air straight into the valve. When the mattress is inflated, the same bag becomes a sealed, waterproof stuff sack for a sleeping bag, clothing, or electronics.
Made by Terra Incognita from 20D nylon ripstop with a TPU laminate, this dual-purpose dry bag is designed to pair with the brand's Tetras mattress line but works with most valve-equipped inflatable pads. It is the kind of clever, weight-saving accessory that earns its place in a backpack: one item, two jobs, and no moving parts to break.
How does the FastPump's pump-and-store system work?
To inflate, open the bag wide, sweep it through the air to capture a full load, then roll the top closed and press the trapped air out through the connected valve. Two or three bag-fulls fill a typical sleeping pad without a single breath. Once your bed is set, empty the bag, slide in your sleeping bag or spare clothing, roll the top down three times, and clip it shut for a fully waterproof dry sack. One accessory has just done the work of two.
Why avoid inflating a pad by mouth instead of the FastPump?
Inflating a mattress by mouth forces warm, humid breath into the pad, and that moisture condenses inside the insulation, chilling you over the night and inviting mildew. The FastPump fills the pad with cool, dry ambient air instead, keeping the interior clean and the insulation performing. It also saves you the light-headed effort of blowing up a full-size pad at altitude after a long day.
What is the FastPump dry bag made of?
The shell is 20D nylon ripstop bonded to a TPU laminate - a combination that stays supple and light while shrugging off scuffs and holding a fully waterproof seal. The ripstop grid limits any nick from spreading, and the TPU layer is what makes the bag airtight enough to pump and watertight enough to trust with a down sleeping bag in a downpour.
Specifications
| Characteristic | FastPump 40L |
|---|---|
| Length (EU) | 35 cm |
| Length (US) | 13.8 in |
| Width (EU) | 21 cm |
| Width (US) | 8.3 in |
| Height (EU) | 64 cm |
| Height (US) | 25.2 in |
| Weight (EU) | 120 g |
| Weight (US) | 4.23 oz |
| Volume (EU) | 40 L |
| Volume (US) | 10.57 Gal |
| Packed Length (EU) | 23 cm |
| Packed Length (US) | 9.1 in |
| Packed Width (EU) | 11 cm |
| Packed Width (US) | 4.3 in |
| Material | 20D Nylon Rip Stop, TPU laminate |
| Furniture | Duraflex® |
| Valve Type | Plastic |
| Color | Light Green |
| Product Type | Pump |
Key features
- Two tools in one - inflates a camping mattress and then stores gear as a sealed dry bag, replacing a separate pump
- Ultralight at just 4.2 oz (120 g), so it adds almost nothing to your pack weight
- 100 percent waterproof construction with sealed seams keeps a sleeping bag or electronics bone dry
- RollProof roll-top closure locks air in for pumping and water out for storage
- Generous 40L (10.57 Gal) volume swallows a bulky sleeping bag or a full day of layers
- Moisture-free inflation - filling with captured air instead of breath keeps damp condensation out of your pad
- 20D nylon ripstop with TPU laminate resists abrasion while staying featherweight
- Purpose-matched to Terra Incognita Tetras mattresses and compatible with most standard inflation valves
Who makes it
Terra Incognita has spent more than 18 years running trips and expeditions and manufacturing its own outdoor gear, so this model comes off the brand's own production line rather than a rebadged catalog. The design is tested in the field by the people who guide the trips.
The Terra Incognita FastPump is a 40L ultralight dry bag that doubles as an air pump, letting you inflate a camping mattress in seconds and then seal your gear away 100 percent waterproof - all from one 4.2 oz (120 g) piece of kit. Instead of carrying a separate electric pump or blowing your mattress up by mouth (which pushes warm, moist breath into the pad), you scoop air into the bag, roll the top, and squeeze the captured air straight into the valve. When the mattress is inflated, the same bag becomes a sealed, waterproof stuff sack for a sleeping bag, clothing, or electronics.
Made by Terra Incognita from 20D nylon ripstop with a TPU laminate, this dual-purpose dry bag is designed to pair with the brand's Tetras mattress line but works with most valve-equipped inflatable pads. It is the kind of clever, weight-saving accessory that earns its place in a backpack: one item, two jobs, and no moving parts to break.
How does the FastPump's pump-and-store system work?
To inflate, open the bag wide, sweep it through the air to capture a full load, then roll the top closed and press the trapped air out through the connected valve. Two or three bag-fulls fill a typical sleeping pad without a single breath. Once your bed is set, empty the bag, slide in your sleeping bag or spare clothing, roll the top down three times, and clip it shut for a fully waterproof dry sack. One accessory has just done the work of two.
Why avoid inflating a pad by mouth instead of the FastPump?
Inflating a mattress by mouth forces warm, humid breath into the pad, and that moisture condenses inside the insulation, chilling you over the night and inviting mildew. The FastPump fills the pad with cool, dry ambient air instead, keeping the interior clean and the insulation performing. It also saves you the light-headed effort of blowing up a full-size pad at altitude after a long day.
What is the FastPump dry bag made of?
The shell is 20D nylon ripstop bonded to a TPU laminate - a combination that stays supple and light while shrugging off scuffs and holding a fully waterproof seal. The ripstop grid limits any nick from spreading, and the TPU layer is what makes the bag airtight enough to pump and watertight enough to trust with a down sleeping bag in a downpour.
Specifications
| Characteristic | FastPump 40L |
|---|---|
| Length (EU) | 35 cm |
| Length (US) | 13.8 in |
| Width (EU) | 21 cm |
| Width (US) | 8.3 in |
| Height (EU) | 64 cm |
| Height (US) | 25.2 in |
| Weight (EU) | 120 g |
| Weight (US) | 4.23 oz |
| Volume (EU) | 40 L |
| Volume (US) | 10.57 Gal |
| Packed Length (EU) | 23 cm |
| Packed Length (US) | 9.1 in |
| Packed Width (EU) | 11 cm |
| Packed Width (US) | 4.3 in |
| Material | 20D Nylon Rip Stop, TPU laminate |
| Furniture | Duraflex® |
| Valve Type | Plastic |
| Color | Light Green |
| Product Type | Pump |
Key features
- Two tools in one - inflates a camping mattress and then stores gear as a sealed dry bag, replacing a separate pump
- Ultralight at just 4.2 oz (120 g), so it adds almost nothing to your pack weight
- 100 percent waterproof construction with sealed seams keeps a sleeping bag or electronics bone dry
- RollProof roll-top closure locks air in for pumping and water out for storage
- Generous 40L (10.57 Gal) volume swallows a bulky sleeping bag or a full day of layers
- Moisture-free inflation - filling with captured air instead of breath keeps damp condensation out of your pad
- 20D nylon ripstop with TPU laminate resists abrasion while staying featherweight
- Purpose-matched to Terra Incognita Tetras mattresses and compatible with most standard inflation valves
Who makes it
Terra Incognita has spent more than 18 years running trips and expeditions and manufacturing its own outdoor gear, so this model comes off the brand's own production line rather than a rebadged catalog. The design is tested in the field by the people who guide the trips.
Questions & answers
FastPump FAQ
How does a dry bag pump inflate a mattress?
You open the bag to catch a load of air, roll the top closed, then squeeze the captured air out through the mattress valve. Two or three bag-fulls inflate a typical pad in under a minute, with no breath and no electric pump required.
Is the FastPump dry bag fully waterproof?
Yes, the FastPump is 100 percent waterproof thanks to a TPU-laminated shell and sealed seams. With the roll-top closed three times and clipped, it protects a sleeping bag, clothing, or electronics through rain and river crossings.
How much does the FastPump weigh and how big is it?
The FastPump weighs just 4.2 oz (120 g) and holds 40L (10.57 Gal) of gear. That is light enough to forget it is in your pack, yet roomy enough to swallow a full sleeping bag or a day's worth of layers.
Will it work with any inflatable mattress?
It is matched to Terra Incognita Tetras mattresses and works with most inflatable pads that use a standard valve. Check that your pad's valve accepts the bag's nozzle before relying on it as your only pump.
Why use a pump instead of blowing up the pad by mouth?
Blowing by mouth pushes warm, humid breath into the pad, which condenses inside and can chill you and breed mildew. The FastPump uses cool, dry ambient air, keeping the insulation clean, dry, and warmer over repeated nights.
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