FiTSTILL 24PCS Anti Fog Inserts Reusable Moisture Absorbing Strips Humidity
Quick take
FiTSTILL 24PCS anti-fog inserts are small moisture-absorbing pads meant to help prevent condensation inside compatible GoPro-style underwater housings. They’re aimed at divers and snorkelers who shoot in cold or humid conditions and want a reusable option you can dry and re-use. The main caveat is that placement depends on your camera model and housing layout, and the inserts may not match the exact fit of every non-listed dive case.
Pros and cons
Pros
- Reusable inserts made with moisture-absorbing silica gel on cellulose fiber.
- Designed for multiple GoPro Hero and compatible action camera housings (model-specific placement guidance).
- Can be dried out by baking at 300°F for 5 minutes, then cooled before use.
- Includes 24 pieces, with each piece sized at 25 mm x 12 mm (and can be DIY cut).
Cons
- Placement matters, and using too many or too few inserts is easy to get wrong at first.
- Fit is best for the listed compatible housings, so some third-party housings may be a less ideal form factor.
- Review evidence is mixed on how much moisture suppression you get when combined with an already well-sealed housing.
What buyers think
Buyer-review evidence is generally supportive, with several shoppers reporting that the inserts help keep underwater housings from fogging and make it easier to keep footage clear during dives. Reuse practicality also comes up positively, including the ability to dry them and prepare them before trips. At the same time, review evidence includes limited but real caveats around fit, where measurement and housing geometry can affect how neatly the inserts sit without interfering with buttons or camera positioning. Overall, the pattern suggests these inserts are most reliable when you follow the intended placement approach for your specific camera model and housing.
How these anti-fog inserts work (and what to expect)
Condensation inside an underwater housing is usually caused by temperature changes, warm camera internals meeting cooler conditions, and trapped moisture. These inserts are made to absorb humidity, reducing the chance that water vapor turns into visible fog on the inside of the housing.
Practically, that means you are not just protecting against splashes, you are managing moisture buildup that can happen even when the housing is closed correctly. The goal is clearer optics and fewer usable-take interruptions, especially when shooting in cold water or humid environments.
Placement and compatibility, the part that can make or break results
These inserts are sized at 25 mm x 12 mm and are intended to be used with specific camera and housing layouts. For GoPro owners, the number and side you place them on depends on the model:
- Hero and Hero 2: place one insert on either side of the camera.
- Hero 3 and Hero 3+: place one insert on the side with the lens and one in the bottom.
The listing also describes compatibility across many other GoPro Hero generations (including Hero 4/5/6/7/8/9/10/11/12/13) and additional action cameras like DJI Osmo Action series and certain 360 models. If your housing model is not a close match, you may still be able to use them by positioning them beside the camera, but the fit may be less tidy.
Reusable drying, how to use them between dives
The inserts are designed to be used multiple times. When you want to restore them, you can bake the inserts at 300°F for 5 minutes, then let them cool before handling or installing them in the housing.
This re-drying approach is part of the value proposition, because it lets you stage inserts for a trip instead of relying on disposables. A practical workflow is to dry them, cool them fully, and keep them ready for the next outing.
Pros and cons for real-world underwater filming
When they are a great fit
- You frequently shoot underwater in cold or humid conditions where fogging is a recurring concern.
- You want an add-on moisture management accessory for your GoPro or compatible housing, without switching to a different enclosure system.
- You’re comfortable following model-specific placement and want a reusable approach for multiple dives.
When you should be cautious
- If you use a third-party housing that is not closely aligned to the listed camera layout, you may need to improvise positioning, which can reduce effectiveness or comfort.
- If your housing already stays clear most of the time, the benefit may feel smaller, especially on trips where you do not see fogging issues.
- If you are new to underwater setups, plan time to learn where the inserts go so they do not block buttons or disrupt camera seating.
Verdict: should you buy FiTSTILL 24PCS anti-fog inserts?
FiTSTILL’s 24PCS reusable anti-fog inserts are a sensible buy if you shoot underwater and want a moisture-absorbing buffer to help prevent fog inside compatible dive housings. They stand out for reusability (bake to dry) and for covering many GoPro generations with clear placement guidance for at least some models. Choose them if your camera and housing match the intended layout closely, and consider caution if your setup is a non-standard third-party case where the inserts may not sit as intended.
Price and availability
This item is generally offered on major marketplaces with live pricing. Check the current listing price before ordering to confirm it fits your budget versus how many dives you plan to run this season.
FAQs
How do I dry and reuse the FiTSTILL inserts?
Bake the inserts at 300°F for 5 minutes, let them cool before handling, then place them back into the housing for your next outing.
Do these inserts work for all GoPro housings?
They are designed for multiple GoPro Hero generations and compatible action camera housings, but placement depends on the camera model. For best results, match your camera model to the recommended insert positions and ensure the inserts fit your housing without interfering with the camera.
Can I cut the inserts to fit my setup?
Yes. Each insert piece measures 25 mm x 12 mm, and the inserts can be DIY cut to fit different sizes.
How many inserts should I use per dive?
There is no universal number, since placement and housing layout vary by camera model. Reviewers often mention using multiple inserts per dive, and the listing provides model-specific placement guidance for some GoPro versions.
Are these anti-fog inserts worth it if my housing already seals well?
If your housing rarely fogs, the improvement may be less noticeable. However, these inserts are most useful when you expect temperature swings, cold water, or humid conditions where condensation can still form inside the housing.
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Specifications
| Product Title | FiTSTILL 24PCS Anti Fog Inserts Reusable Moisture Absorbing Strips Humidity Removing Defogger for Go Pro Hero 13/12/11/10/9/8/7/(2018)/6/5/4/3+/3 Session Max Action Camera Underwater Dive Housings |
|---|---|
| Category | Electronics > Camera & Photo > Underwater Photography > Housings |
| Brand | FiTSTILL |
| Manufacturer | FitStill |
| Model Name | Hero |
| Model Number | 24 anti-fog inserts |
| Image stabilization | Digital |
| Screen Size | 2 Inches |
| Color | White |
| Item Weight | 0.1 Kilograms |
| Water Resistance Level | Waterproof |
| Video Capture Format | MP4 |
| Compatible Devices | Go Pro Hero 11/10/9 Black |
| Audio Recording | No |
| Shooting Modes | Automatic |
| Exposure Control Type | Automatic |
| File Format | MP4 |
| Compatible Camcorder Models | GoPro HERO 2018, GoPro HERO3, GoPro HERO3+, GoPro MAX |
| Camera Model Compatibility | GoPro HERO10 Black, GoPro HERO11 Black, GoPro HERO12 Black, GoPro HERO3 Black, GoPro HERO4 Black, GoPro HERO5 Black, GoPro HERO6 Black, GoPro HERO7 Black, GoPro HERO8 Black, GoPro HERO9 Black |
| Unit Count | 24.0 Count |
| Manufacturer Part Number | 24 anti-fog inserts |
| Warranty Description | 24 Months |
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