A desktop humidifier with live moss inside, funded on Kickstarter in 2023 and on sale ever since. The delivery record is unusually complete for this category. The central claim — that the moss cleans your air — is the one thing nobody outside the company has measured, including the publication that handled the device in person.
Maker: MOSSLAB, South Korea
Price: US$109.00 for the All in One pack, marked down from a US$145.00 regular price on the maker’s own store. Confirmed on 5 August 2026 and may change.
The delivery record is unusually complete
Most of what we look at has one campaign and a handful of updates. This has three years of public trail.
| What | Figure | Source |
|---|---|---|
| Funding period | 5 July – 3 September 2023 (60 days) | Kickstarter campaign page |
| Goal | US$5,000 | Kickstarter campaign page |
| Raised | US$548,118 | Kickstarter campaign page |
| Backers | 3,674 | Kickstarter campaign page |
| Campaign updates posted | 24 | Kickstarter campaign page |
| Comments on the campaign | 876 | Kickstarter campaign page |
| Last campaign update | 11 July 2024 | Kickstarter campaign page |
Two things stand out. The campaign closed in September 2023 and the maker was still posting updates in July 2024, ten months later. And 876 comments is a lot of public conversation to leave standing. A company that had gone quiet on its backers would generally have a thinner and angrier comment section than one that stayed.
The company also went on to run a second Kickstarter campaign, for a product called Moss Echo, which is not something a first campaign that collapsed usually leads to.
The specification, as published
| What | Figure |
|---|---|
| Weight | 1.3 lb |
| Battery | 2,000 mAh |
| Power | 5 V, USB-C |
| Stated noise level | 25 dB |
| Water capacity | 320 ml |
| Secondary reservoir | 40 ml |
| Stated runtime | 5 hours and 6 hours, depending on mode |
| In the All in One pack | Unit, moss filter, 3 cotton filters, magnetic ball, USB-C cable, manual |
| Warranty | 1 year, per the maker |
| Trial | 14 days, per the maker |
The one thing nobody has measured
The reason to buy this rather than an ordinary humidifier is the moss. Mosslab says the moss converts carbon dioxide to oxygen and removes fine dust from the air.
Read the Engadget piece closely and it does not confirm that. It says “according to Mosslab” and then repeats the company’s claim. A reporter stood next to the device, photographed it, and still attributed the performance to the manufacturer — because a trade-show floor is not a place to measure air quality, and because the company had not published a measurement to check against.
We looked for one. We did not find it.
- No CADR figure. Clean Air Delivery Rate is the standard number air purifiers are compared on. Mosslab does not publish one.
- No filtration standard. No HEPA class, no particle-size rating, no independent lab report.
- No measured comparison against a plain humidifier of the same size.
So the honest position is this: it is a 25 dB desktop humidifier with living moss in it, and the moss is beautiful. Whether the moss measurably changes the air in your room is not established by anything we could read.
Pros
- An unusually complete delivery record: 24 updates, 876 comments, still posting ten months after the campaign closed
- A second campaign and a continuing product line, three years on
- Seen and photographed in person by an outside publication
- A 320 ml reservoir and a 2,000 mAh battery, with a stated 5 to 6 hours per fill
- 14-day trial and a one-year warranty, both stated by the maker
Cons
- The central claim — that the moss cleans air — has no published measurement behind it
- No CADR, no filtration class, no independent lab report
- No published lifespan or replacement cost for the moss itself, which is the consumable
- The 25 dB figure comes from the maker with no stated test conditions
- Marketing language leans on wellness terms that the specification does not support
Where this leaves a buyer
As a quiet desktop humidifier with a living plant in it, this is a real product from a maker with an unusually complete delivery record. Treat the air-cleaning language as unproven: it is the one claim nobody outside the company has measured, so it should not be the reason you buy.
FAQ
Does it actually clean the air?
We cannot say. The maker says it does. Engadget repeated that claim and attributed it to the maker rather than confirming it. No measurement has been published that we could find.
Did the Kickstarter backers receive it?
The evidence is strong. The campaign posted 24 updates through to July 2024, and the comment section is large and still standing, and the company ran a second campaign afterwards.
Is US$109 the real price?
It is the price shown on the maker’s store on 5 August 2026, marked down from US$145.00. Check before you buy.
Where to buy
Mosslab Moss Air
US$109.00 (regular US$145.00)
Free US shipping over US$70. Fourteen-day trial, per the maker.
Loupe has not handled this product. Every figure above is linked to the source it came from.
