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💍 Secure your sparkle, invisibly.
Feramox Invisible Clip-on Ring Size Adjusters are a sleek, skin-safe solution for women’s thin rings (1-4mm). Made from flexible TPU silicone, these adjusters reduce ring size by 0.5 to 2 sizes, ensuring a snug, comfortable fit without compromising style. The virtually invisible design keeps your rings looking flawless while preventing slipping or spinning, perfect for everyday wear and special moments alike.





| ASIN | B07WK2NNR6 |
| Best Sellers Rank | #35,344 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #22 in Ring Sizers |
| Brand | Feramox |
| Brand Name | Feramox |
| Color | Transparent |
| Customer Reviews | 4.0 out of 5 stars 8,129 Reviews |
| Finish Type | Unfinished |
| Item Highlight | Fit Thin Rings Only, for Flat Band Width from 1mm to 4mm, Patented Clear Clip-on Ring Sizers in 4 Sizes |
| 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 Items | 8 |
| Number of Packs | 4 |
| Number of Pieces | 8 |
| Product Style | Modern |
| Style | Modern |
| UPC | 729270436141 |
| Unit Count | 8 Count |
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.
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!
T**Y
Comfort
Seems to work better than the spiral ones.
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 ... 😕
L**O
Good product
These were very helpful for a ring I have that was slightly loose
D**N
Unsorted sizes and very difficult to get on
I thought the 8 sizes would come on a card or be labelled somehow. Instead they were just all laying loose in the package making it impossible to sort them by size. My spouse and I spent nearly an hour trying to get one to clip onto my ring and had to use tools like tweezers and forceps to make it work. Very disappointed.
J**S
Thin band friendly
I have a very thin band and it still fit my ring. You can hardly see it. Can’t feel it at all. Very comfortable. Light weight.
A**R
Great fitting ring sizers
These ring sizers worked perfectly and made my rings more secure and not turning on my fingers.
T**R
Waste of money
They are a waste of money! I would not recommend them
K**W
10/10 recommend exactly what I wanted
My boyfriend bought me this beautiful ring but it was a bit loose when I got it. I only needed about half a size less so I figured it wasn’t worth getting it resized. These little size adjusters completely resolved my sizing issue. They were so easy to put on and I think because my ring has a more rounded band multiple sizes of the adjusters fit. That means if I lose one I won’t have to buy another pack of these which is great. The material of the sizers also makes it so the ring won’t slide around your finger and the stone is never uncentered. They are also completely invisible which I tried to show in my images but most importantly they are so comfortable and I can’t even feel that they’re on my ring. I definitely recommend these to anyone looking to shave off 0.5-1 size off of their ring.
K**M
Great - from size 7 to 6 and invisible.
Works perfectly. My wife was a size 6, the ring I got her was size 7, it was able to save her a whole size. Some of the bigger options were even too tight. Was great. If the ring is too big really just get this and save yourself from spending a lot of money to ruin the ring. It is invisible.
M**E
I recommend for rings that don't fit properly!
I recently lost 40 lbs and I had JUST resized my rings up, of course now both my wedding and engagement ring are lose, I thought I'd try these out, it is difficult though because my engagement ring is so thin at the bottom, luckily!!! This came with sizes that fit both bands and sit nicely together. I'm very happy with this product and it's nice that the rings stay in place as well! I'd recommend!!
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 weeks ago
1 month ago