This ring sizer reduces the size of your ring without changing its size 3MM flat style Suitable for rings with a width of 2-4MM It fits both women's and men's rings. No matter what you do, your ring will fit perfectly and your precious jewelry won't be lost. Certified High Quality TPU Silicone - Forget about allergies and discomfort. TPU (Thermoplastic Polyurethane) is used in medicine and is therefore completely safe for health and does not cause any irritation. TPU is flexible and durable. It is also suitable for all rings: those made of precious metals and those set with gemstones. Easy to touch and barely noticeable MULTIPURPOSE - This little device is very useful as it can solve many problems such as falling rings, ring oversizing (what to do when a ring is too big), and even combining multiple thin rings into one. You're stressed out before your wedding, you've lost weight, your engagement ring is loose, and you're worried about losing it. Don't worry, this ring size adjuster is designed to hold your ring in place. SAFE FOR YOUR RING - Silicone ring adjustments solve the problem without damaging the ring, some rings cannot be replaced by a jeweler in the traditional way as this process damages the stone and distorts the original beauty of the ring, so the ultimate solution is here is the ring size adjustment. It will securely resize your ring and keep it looking beautiful, just like the day you bought it! Invisible and Discreet - Your new ring adjustment is completely transparent, visibility is unquestionable, but it's there to do its job. No one will notice the ring adjuster is there unless you point your finger at it. It's also made of memory material that won't loosen or stretch on your ring, it will always maintain its original shape.