How cute! Pair this with a necklace or bracelet and you are a walking monogram for any initial! Signal Flag letter is approximately 3/4" square. There are 4 band styles. Two of them are adjustable and two of them are not. The non adjustable bands only come in sizes 6, 7 or 8. If you are not sure, please order an adjustable. See the ring with the checkerboard blue & white? That is the letter "N" & I wear this one all the time, it is my personal monogram ring and I LOVE it! Very comfortable and probably the cheapest band ever! It looks like I found it in a box of Cracker Jacks, but hey I love it and I think you will too! I always get complements on it especially when I pair it with my matching "N" bracelet.