The perfect tool for finding your exact ring size This plastic ring sizer has a range of sizes based on standard UK finger measurements, so you can easily determine your precise size for any ring purchase.Sliding fit test - Slide bars along sizer to find ideal fitMeasurement guide - Labels match UK ring sizesPortable size - Fits in wallet, pockets or purse for easy accessTired of guessing your ring size and ordering the wrong size time and time again? With this ring sizer, you'll have your exact size handy whenever you need it. No more dealing with the hassle of returns and exchanges.