As I said above, my daughter has had her Medic Alert sport band for almost a year. It is a little big, but rather than cut off the excess strap, we sewed velcro onto the bracelet and the end of the strap and that works well. If you go to their website - medicalert.org, click on "emblems", then "Sport bands" you can see all the designs. They will not do memberships for minors over the internet, so you will have to call the 800 number to set up your son. I have been very pleased with their response time - about a week to get the bracelet.