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💍 Invisible ring magic: Perfect fit, zero slip, all day comfort!
Feramox Ring Size Adjusters are a sleek, transparent TPU solution designed to fit thin rings (1-4mm width) and reduce ring size by 0.5 to 2 sizes. This 8-piece set offers four adjustable sizes, ensuring a secure, comfortable fit without irritation or visibility. Ideal for professionals seeking a discreet, reusable way to prevent loose rings from slipping, these eco-friendly, skin-safe adjusters combine modern design with practical functionality.





| ASIN | B07WK2NNR6 |
| Best Sellers Rank | #48,661 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #23 in Ring Sizers |
| Brand | Feramox |
| Brand Name | Feramox |
| Color | Transparent |
| Customer Reviews | 4.0 out of 5 stars 8,113 Reviews |
| Finish Type | Unfinished |
| Item Weight | 13.88 g |
| Manufacturer | Freeman direct |
| Manufacturer Part Number | FM01-JA-9 |
| Material | TPU Silicone |
| Material Type | TPU Silicone |
| Model Number | FM01-JA-9 |
| Number of Pieces | 8 |
| Product Style | Modern |
| Style | Modern |
| UPC | 729270436141 |
| Unit Count | 8 Count |
W**N
Genuinely amazed at how well this worked!
I recently got engaged and had my ring resized once already, but I was hesitant to have it sized down just a little more. My ring was just large enough to rotate when I type and with typing being a main aspect of my job I looked up some solutions. I was split between this and the spiral corded one and I am so glad I chose this! The sizes this kit comes with are great and I was able to find one that fit comfortably on my super thin band. It was easy to pop on/off (not so much if you have acrylic/fake nails), and I ended up not needing the adhesive it comes with. It does come with a MASSIVE sheet of adhesive in retrospect to how much you'll need to attach them to a ring (just bigger than a business card) so I'm trying to find other uses for it so it doesn't go to waste. When you have a size you're happy with it's easy to pop off and trim if necessary, and on my finger (size 7.5) it's not noticeable in the slightest. TLDR: Get this over the corded ones, it's way more comfortable and less (if not at all) noticeable. Great size options. Even comes with a sheet of adhesive tape for extra security. Worth the money 110%.
C**A
This product is great, just be sure to size correctly!
I ordered the variety pack of ring adjusters to figure out which size fit best. My ring (and hand in general) is small (size 6), so I anticipated using the XXS size. Surprisingly, this was actually too small, as it didn't clip in correctly and when I cut it to fit, it kept popping out (not the product's fault - just incorrectly sized to the band of my ring). I jumped up a size to the XS (1.5mm - 2.5mm) and it works beautifully - snaps right in and stays there. One thing I will mention, with wear and tear (4 months), and snapping it in and out every day, it does loosen a bit (which is why I think it's nice to have more than one. Also nice to have a backup for those days when your hand randomly swells and you pop it out and accidentally misplace). All in all, it's a great, inexpensive way to secure my ring through the colder months. Will be ordering again in future!
A**R
Discreet, Versatile, Simple / Added grip & shorter length would be helpful
These are SO helpful! I have been really bummed out by my beautiful engagement ring not fitting...my knuckles are larger than where my ring sits, so I cannot have my ring sized down any more if it's going to fit over my knuckle. Once my ring makes it all the way onto my finger, it is very loose and flops around. These ring size adjusters allow me to put on my ring and THEN tuck in the adjuster to keep it in place. This is exactly what I needed as opposed to an overall ring size change (I would not be able to get the ring over my knuckle if the adjuster were attached to the ring BEFORE slipping it onto my finger). My only critiques for improvement would be: -Perhaps if the inner portion of the adjuster had a tiny bit of plastic tread/grip, it wouldn't slip around quite so much when wet. The adjuster fits rather snuggly to my ring, thankfully, but I think water tends to make it slippery enough to slide up around either side of my ring and become visible. -Also, it could be nice to have some slightly shorter adjusters that have the flat wing edge on it (I don't like the look or fit quite so much when I cut the edges off-I have a very small ring size, only 4.5, so the length is a bit long for me and the wings help to keep it in place, I think) Thank you so much for this product! I can finally enjoy my ring as much as a gal should be able to during this joyful time of celebrating engagement!
S**B
I got ripped off
So, I thought that this would work. Some of my rings didn't fit properly, so, I found these. As U can see by the pictures, and this is how i pulled it out of the box , it looked like it was opened already. Also , I'm not sure how many i got, but it wasn't 8 pieces. More like 4 or 5. That sticky stuff was everywhere except on this item !! I ended up using crazy glue . Fits great !! But I do not understand why it was opened already ... 😕
R**L
Comfortable, invisible spacer that actually works.
I was able to get a perfect fit with this product! I just received an engagement ring (YAY!), and despite ordering a custom size (my fingers are pretty small, size 4.5) it was still a little loose. I find the coil spacers uncomfortable and my ring spun on my finger which affected the look and comfort of my ring. That led me to this great product! The kit comes with 8 spacers (2 of each size) and I was able to find one to fit my thin band. Make sure to try all the sizes to ensure you're getting the best fit. I also like that this spacer snaps onto the inside of the band so it doesn't cover the diamonds along the side of my ring. If you have issues with the spacer falling off or need a slightly tighter fit, the kit also comes with this rubbery, double-side tape that you stick inside the groove of your spacer. The tape can be tricky to get into the groove of the thinner spacers, but is easy to remove or adjust, and doesn't permanently adhere to your ring. I didn't find that the spacer fell off on it's own ,but I added the tape anyway to make it a little more snug. Overall, I definitely recommend giving this a try. It's comfortable to wear and not clunky like other spacers. Fairly easy to use, and once you have it on, you'll forget it's even there.
D**F
I wouldn’t recommend
When I received this item, it looked like someone burnt a hole in the package… I didn’t even receive all the adjusters. On top of that, the few I did receive were uncomfortable and ultimately I ended up getting my ring professionally resized.
C**Y
Work perfectly!!!
I ordered these to adjust the size of a family heirloom ring. The ring has an engraving inside the band so it's impossible to have it resized without ruining the inscription. Also, since it's a family heirloom and will be passed on in due time, I didn't want to do anything to permanently alter the ring. These size adjusters solved all my problems. They were affordable and included a variety of sizes (I wasn't sure what size I needed) so I have additional ones I can use on other rings. The ring fits me perfectly now and, since the size adjusters are clear, I can still read the inscription and it is almost impossible to tell there's a size adjuster on the ring. If I had to come up with something negative to say I guess that the size adjusters were a bit difficult to get on the ring. However, I don't really see this as a drawback since it makes me feel that the ring is more secure.
C**N
Love this!!
I purchased this for the XXS size (1 - 1.5mm). I am so happy with my decision to purchase this! I recently got engaged and my ring is absolutely perfect! The only issue with it was that my fingers fluctuated so much throughout the week! On warmer days, my fingers would swell up and the ring would be perfectly snug. However, on colder days, my finger would shrivel up and be 0.25-0.5 sizes too big for my finger...it would constantly spin and flop around on my finger. I thought about getting it adjusted, but didn't want to commit to something so permanent especially since my band is a micro pave band and I didn't want the small stones to be loosened from the adjustment at a jeweler. I decided to try my luck on Amazon and stumbled upon this hidden gem! I think it was one of the few, if not the only one, I was able to find that had a rounded adjuster instead of a square adjuster. I think this was also the only one that was able to accommodate a small band width -- which is the only reason why I decided to purchase this one. This was the only seller that I was able to find with a rounded, XXS (1-1.5mm) adjuster. I put it on as soon as I got it in the mail! Word of advice: only cut small snippets from each side at a time -- a little goes a long way!! The adjuster fit perfectly and did a great job making my ring fit nice and snug on the days I need it to. It's super comfortable and sometimes I forget that I'm wearing it with my ring. The best part about it (which is what I was most worried about) is that you can barely see it! Unless you bring you hand up close to your face to examine it, you can barely notice it an arm's length away. So happy I bought this! Hopefully they sell packs of just individual sizes in case I lose my adjuster...I'm not really sure what to do with the 3 other sizes, since I don't own any rings with that large of a width.
T**R
Waste of money
They are a waste of money! I would not recommend them
J**D
Perfect Solution!
These little ring size adjusters work very well. Choose a size closest to the band of the ring and it will stay in place. The adjusters take up the extra space and stop the ring from twirling around. I've lost a few adjusters over time, in sudsy water or just out and about, so I order more. There are different widths in one package to use with different ring sizes. Very easy, they don't show as they are clear and stay on the inside of your hand so work perfectly. If I hadn't found these, I would have stopped wearing all my rings by now as they would all be too loose after I get them over my knuckles.
J**A
Snug fit, adhesion temporary
Very comfortable and looks invisible when on. If you wear your ring everyday this might not be a permanent solution. I find after about a week of wear I have to reapply the adhesion. Last night I lost the peice that fits best while digging for my keys it slipped off my ring. A great temporary solution but ultimately I have to get my ring resized.
L**L
Easy, Comfortable, and Perfect!
These worked perfectly for my ring which was slightly too loose and keeps it upright on my finger! I don't feel it when it's on and can't tell that it's there until I remove it. Love that they're easy to take on and off and comes with an extra adhesive adjuster if I needed the extra boost. Price is very reasonable and having a little silver polishing cloth included is a useful bonus!
J**.
HARD PLASTIC -
these are HARD plastic, not flexible like I wanted - didn't work for me at all, does not fit any of my rings??
Trustpilot
2 days ago
1 week ago