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💍 Lock in your perfect fit—because your ring should never hold you back!
The Feramox Ring Size Adjuster offers 48 transparent TPU strips in 6 sizes, designed to reduce ring size by up to 2 sizes. Comfortable, skin-safe, and virtually invisible, these adjusters fit wide rings over 3mm and provide a secure, customizable solution to loose rings without permanent resizing.





| Best Sellers Rank | #9,726 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #18 in Jewelry Sizers & Mandrels |
| Customer Reviews | 4.0 out of 5 stars 7,496 Reviews |
A**R
Great all around product.
I ordered the Feramox ring size adjuster because my college ring was not fitting quite right any more after I lost 30 pounds. I did not want to send it off to be resized as I am still young and I will most likely gain some if not all of that weight back before it is all said and done. The package comes with many different sizes and multiple strips for each size. They are extremely easy to apply and stick very well. Some reviews mentioned that their adjuster lasted months before coming off, I have had to replace mine twice in the past 3 months but I use my hands a lot and forget to remove my ring before moving heavy material, doing auto work, and getting my hands wet. This causes my ring to get a bit torqued, which sometimes stretches and moves the adjuster, loosening it from the ring. It does not bother me that I have to replace them though, mine tend to collect dirt and debris. It is super easy to remove the old and replace, and I will continue to use these adjusters instead of having to have my entire ring cut and resized. My ring is too big for the more permanent metal "stints" but these strips work great.
K**U
Works as advertised
Great product. I got a ring that was about a 1/2 size too big. Ordered this product. Extremely happy. Application was just slightly tricky, but only took about 15 seconds to get it right. (It takes a bit to get it centered and flat, but you can manipulate it until you have it where you want.) I followed the instructions and, after positioning and firmly pressing, left it alone for 24 hours. It has not come off since. It is also virtually invisible - regardless of where you applied it. The ring I have can be viewed fine regardless of where it is twisting on my finger. I put the strip on what I considered the less attractive side, so it would sit under my finger and not be visible. But if the ring twists, and it ends up on the side or top - you can't tell. It is just that invisible and thin. You can easily stack these as well, if you need that much extra. And... it comes with so many sizes and copies (and you can cut them if you need to) - this will last me a lifetime. Great product! Works as advertised (just follow the instructions and don't be impatient)!
A**E
Still Effective
Possibly a stronger adhesive on the ring sizer.
D**N
Good Temporary Solution
I waited a month before writing my review. I used the product on a man's wedding band after I lost a lot of weight. Once installed, it worked very well for a couple weeks. At that point, the adhesive lost its stickiness, and I installed another one. The second one also had the same failure around the two-week mark. While they stayed on, they did a very good job and were comfortable to wear, but don't expect it to last forever. Another note, I found the product hard to install, the adhesive kept sticking everywhere except inside the ring band and it took 5-10 frustrating minutes to get it stuck correctly.
R**L
DON'T WASTE YOUR MONEY!
This product was absolutely useless! First off, its a real pain to put on..Secondly, the adhesive is terrible. As soon as my fingertips touched even the smallest corner of the strip, that spot was no longer the least bit sticky and crinkled immediately. I tried another strip, and used a pair of tweezers to take it off the packaging, and I couldn't even get the ring past my knuckle before it, once again, started to roll and crinkle up! Although it comes with different widths, it doesn't have different thicknesses, therefore, if you need it to be a little thinner or thicker to get the perfect fit, you're out of luck! I waited for this for 3 days after it said it had been delivered! The notification said it had been "given to someone at my address", yet 3 days later, when I lodged a complaint about having not even received it (which was today), my husband and I caught the Amazon delivery van pulling up and putting it in our drop box, at 11:30 pm! Hours after I put in my complaint! Hmmmmm, so, they LIED about having delivered it, and LIED that someone had personally taken it. And not to mention the fact that the guy didnt even apologize or say something to us..Smh This is VERY disappointing as I typically have great service with Amazon, and usually get notifications by way of text messages, the day of the scheduled delivery, all the way up until after it has been delivered SUCCESSFULLY, however, for some reason I got NO text updates for this package and had to actually go to the app and look it up to even see that it had supposedly "been delivered" the day before! What's up with THAT, AMAZON? Smh. But anyway, back to the product, the product that was NOT at all worth the wait and hassle! I am annoyed that I can not choose "ZERO STARS" as that is what it deserves.
G**T
Great solution!
This ring adjuster is exactly what I needed! It doesn’t show or bother because there is nothing on the outer side of the ring. I love that it comes in different widths and colors. Even on a hot day, as today, the ring adjuster doesn’t come off - I wash my hands with it, and it remains firmly in place. Whoever invented this is a genius!
G**Z
GREAT STICKY STUFF & LIKED THE VARIETY OF SIZES
Liked that it had a variety of sizes to choose from. Like the clear color so you can't see it on the ring. Good fit on the ring and was comfortable and not too tight. Good strong sticky stuff - will not easily peel off.
R**N
Heat destroys the adhesive
They work great until you are sweating bullets because you work outside in 100 degree heat, or you use a sauna, or wash dishes with warm water enough times. The adhesive becomes non existent once heat is involved.
S**E
I alike the rings size and it is very easy to used
I like the rings sizes because it makes a easy for me to wearing all the rings i had without worrying that my going to lose the ring i’m wearing and i used it all the time now. Thank you 🙏 🙏🙏 for your good service and excellent delivery Sincerely
C**Y
Efficacité
Cela retient une bague un peu trop grande de ne pas glisser et le plus c’est invisible. Je vous les recommande
R**B
Thumbs up!
No complaints, did the job flawlessly. Adhesive is holding up great. Great value!
E**Y
Love it
These stick on great, I’ve had a peice on my wedding band for about 3-4 weeks now and it has not budged. Take in I wear my ring everyday 24/7. One thing is that it’s not thin enough for some rings, like maybe an engagement ring
P**N
Cheap and Chearful
What can I say? It's a cheap product and cheaply packaged ........ but WORKS! I certainly solved my over sized ring issue.
Trustpilot
2 months ago
5 days ago