This flexible ring sizer is perfect to find your ring size from the safety of your own home. Make sure once you think you've found your size that you can comfortably put on and remove the band over your knuckle, adjust by half a size as needed. Meant to give an idea of size; for rings that cannot be resized (such as eternity bands or engraved pieces) we suggest getting professionally sized. This item ships free, in an envelope with a stamp. Please allow up to 7 business days for delivery.