I already own several Thunderfit rings in the pearl colors in the slightly wider version ( I think 4 mm width ). I absolutely love these silicone rings. They are soft, flexible, don’t irritate my skin under the ring, and so comfortable I forget I even have a ring on. I love being able to match the colors to what I’m wearing. It makes me feel a little stylish and unique. Nobody else at work wears colored wedding bands. Several coworkers have commented on my Thunderfit rings and asked about them.I’m a cleaner for our school district so I don’t want to risk damaging my gold wedding band and diamond ring by bumping them at work. I also use tools occasionally like box cutters and it would be a safety issue if metal rings got caught on something.The reason I didn’t give these stackable rings 5 stars is because the edges don’t have the tapered edges like the wider rings do. This is what makes my 4mm rings so comfortable to wear. These stackable rings have an actual square edge on them. I can tell they would rub against my other fingers and possibly irritate them. The silicone also seems a bit stiffer than the wider rings. This may not bother other people, but it definitely was a problem for me.I was able to get a refund. Thunderfit honored their guarantee. Thank you Thunderfit.My advice would be to avoid the stackable rings and stick with the tapered versions in the wider widths. The other Thunderfit ring versions are a really fun way to wear a wedding band when you don’t want to risk damaging your metal rings or safety is an issue. In fact the colors are so fun I sometimes wear them when I’m not at work. Thank you Thunderfit for making a great product and honoring your guarantee. I plan to buy some more colors soon.