Engrave the front and back of your bracelet with your medical information, and use the wallet card for additional medical information that does not fit on the bracelet. We suggest you use the bottom line of the front engraving to say See Wallet Card. When picking a size, think about how loose or snug you want it to sit. For example, if your wrist is 6 3/4 inches, a 6 1/2 inch bracelet would be a snug fit whereas a 7 inch bracelet would be looser. This is one of our top medical alert bracelets for men when it comes to comfort.