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🧢 Protect your noggin in stealth mode — safety never looked this sleek!
The Ergodyne Skullerz 8945F(x) is a universal bump cap insert engineered with a durable polyethylene shell and enhanced ribbed design to deliver up to 35% more crown impact protection. Lightweight at just 3.2 ounces and featuring maximum breathability through all-over venting, it fits seamlessly into any baseball hat with its patented trim-to-fit system. Ideal for professionals seeking discreet, flexible head protection that blends style with safety.


















| ASIN | B09D16Q74W |
| Best Sellers Rank | #2,429 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #8 in Head Protection Equipment |
| Brand Name | Ergodyne |
| Closure Type | Pull-On |
| Color | Charcoal |
| Customer Reviews | 4.6 4.6 out of 5 stars (3,969) |
| EU Spare Part Availability Duration | 5 Years |
| Included Components | 1 bump cap insert |
| Item Type Name | Universal Bump Cap Insert Extra Venting |
| Item Weight | 3.2 ounces |
| League Name | MMA |
| Manufacturer | Ergodyne |
| Material Type | Polyethylene |
| Model Number | 8945F(x) |
| Size | Single |
| Style Name | Single |
| UPC | 720476234814 |
| Unit Count | 1.0 Count |
| Warranty Description | We stand behind everything we make and guarantee our products to be free of defects in materials and workmanship to the original purchaser for the lifetime of the product. That said, damage, abuse, and/or normal wear are not covered. |
Q**N
Love them
These are a great safety item, have saved my head from lots of bumps since I started using them. I have about half a dozen hats with these in them now. Cons: - They are very warm and you will sweat a lot with them. It helps if you use a trucker style hat where the rear 2/3 of the hat is mesh, but it's still warm. - They will smell bad after some use, because of the sweating. However, they are pretty easy to clean, a little hand soap and water will work in a pinch, so will Febreze, or basically anything. It's neoprene and hard plastic, you can wash with all sorts of things. Pros: - No more headers. Seriously, these are awesome if you do any sort of work where you tend to hit your head on stuff. I used to bang my head on all sorts of things and just deal with it, but with these, no more. A small head bump doesn't bother me at all anymore. - Hats fit better. It takes a few times, but once you install this in a hat, and wear it a bit, the hat will retain its shape around the protector and keep it. Hats slip on and off super easy and don't get "ruined" if they're not carefully handled. - Lightweight and unobtrusive. Compared to standard safety hats and helmets, it's no contest, these blend right in and no one even notices them. - Cheap enough to have a bunch, and therefore have all your regular hats be safety hats. The real upside is you will actually wear them, all the time, and be protected.
A**H
Title: I Bought the Ergodyne Skullerz 8945F(x)… Now I Fear No Cabinet Corner
Let me paint a picture: I’m in my garage, just vibing, when BAM, another stealth attack from the corner of a shelf I installed myself. That’s when I knew I had two choices: start wearing a helmet like I’m in a continuous episode of “Jackass,” or find something subtle that doesn’t make me look like I’m prepping for a medieval joust. Enter the Ergodyne Skullerz 8945F(x), the Tony Stark of bump cap inserts. It’s slim. It’s flexible. It slides into your everyday cap like it’s just chilling, but secretly it’s out here saving your brain cells from betrayal by doors, beams, and open hatchbacks. The first time I wore it, I tested it the only way a mature adult would: I headbutted a cabinet on purpose. (Okay, it was on accident, but let’s say it was research.) And you know what? No stars. No birds. Just a satisfying thud followed by smug silence. My hat didn’t even shift. I strutted off like I’d just won a bar fight with drywall. Comfort-wise, it’s weirdly impressive. It’s like a tiny turtle shell for your head, but breathable and discreet. I wore it for hours and forgot it was even in my hat until I took it off and flinched like my head had been abandoned. If you work in tight spaces, bump your head a lot, or just want to feel lowkey invincible while doing chores, this little guy is worth it. Bonus: you’ll look exactly the same, but with 100% more head protection and 78% fewer curse words shouted at inanimate objects. 10/10 would recommend. Cabinet corners, beware.
M**A
Better to have it and not need it.
It’s lightweight, easy to fit into pretty much any hat, and gives you that extra protection from bumps and low clearances without having to wear a full hard hat. It’s not bulky either, so it’s comfortable enough to wear for long periods on the job. The trim-to-fit design is nice too it actually lets you get a good fit depending on your hat. The protection is legit for what it’s meant for just everyday jobsite bumps and scrapes. Definitely something I’d keep in my hat if I’m working in tighter areas. Only downside is the breathability in the summer. Even though it has vents, your head can still get pretty hot when you’re out in the heat all day. The airflow helps a little, but not enough to fully keep you cool. Overall, it’s comfortable, useful, and adds a good level of protection you just might feel it more when it’s really hot out.
S**A
Simple design, idiot proof
If I could give it 10 stars I would. Wish I had this 30 yrs ago when I started as a mechanic. I cut mine down alittle so it would fit all my working ballcaps. Works great, looks good, and I feel like this should be on a tool truck. I'm 6'4 and have banged my head more times then I can count. This helps.
E**Y
Good item
Fits my hats Great. Needs a bit more breathing holes but protects great.
D**D
No more flimsy, floppy, sloppy hats!!!!!
I love these things! No more flimsy, floppy, sloppy looking hats! I own many hats. When you purchase some hats online the dome looks structured, but when it arrives it is unstructured, meaning flimsy. I do not care for the floppy, flimsy hats. These skullys create a firm dome shape. Really nice look! Now I can wear my unstructured hats the way a ball cap should look.
N**Y
J'ai acheté cette protection pour mettre sous un chapeau en wingfoil. Elle passe très bien et ne bouge pas une fois le chapeau enfilé, et même après de grosses chutes. Je me suis déjà prit la planche et le foil sur la tête et bien je peux dire que ça protège très bien. On peut facilement découper la protection pour l'adapter à quasiment n'importe quelle casquette/chapeau/etc...
A**.
It fit in my cap great and no one can tell it’s there. I work in an environment with low hanging obstacles and this offers just enough security.
A**B
Ottimo prodotto, sono molto soddisfatto dell'acquisto. Molto facile da adattare alla misura del cappello, si può tagliare comodamente con forbici (purchè siano ben affilate). Ho applicato la protezione ad un cappello che utilizzo per fare windsurf: è risultata molto più confortevole di quanto mi sarei aspettato, ed oltre a proteggere dagli impatti risulta anche molto fresco, grazie alla forma rigida cd ai fori presenti lateralmente passa molta più aria rispetto al cappello senza protezione. Non è molto economico, ma lo ricomprerei.
V**V
I feel safe hiking under thick tree branches so kudos to inventor !
K**N
Well vented. Good protection against small/slight bumps (in and out of a van all day long). Bought as a replacement insert for a port west (small peak) bump cap PS59 which it fits perfectly. Doesn't fit the large brim port west bump cap. Would buy again
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