Our Ironman M-dot bracelet design fits in such a way that the M-dot always stays on the top of your wrist. It wont articulate to the bottom if it fits properly. It comes in either the #4 (7.5mm) or the #3 (10.9mm) size M-dot. Available in 14kt white gold, yellow gold and sterling silver. Purchasing 14kt yellow or white gold? Make it extra special by adding a diamond to the top of the M-dot. We use top grade VS1 clarity F-G color diamonds in all of our Ironman Jewelry.