This is a ring that holds its shape around your finger. If you can figure it out :P Whats good about it, is that it doesn't look like a puzzle ring but it still takes you an average of 10 seconds to randomly figure it out - though i had some friends that gave up trying... I made 17 sizes using the United States and Canada system without the quarters. For finding your own ring size start from Wikipedia: http://en.wikipedia.org/wiki/Ring_size This is size 0 other available ring sizes are in my shop.I personally think that the red one is the most playful. Thank you.