Need advice about a bracelet for 4 year old

Hey! My son Ethan needs a diabetes bracelet. I want something that is lightweight and slim but durable. Any ideas?

http://www.roadid.com/Common/default.aspx?utm_source=AdWords&utm_medium=RoadID_OrderText&utm_campaign=Search&referrer=8929&gclid=CNHtrrel27gCFY87Mgodo2oA6g

Just received mine and its perfect. The small rubber version is quite light and easy to wear and looks modern. If you choose the version with the $10 per year profile it will give you much peace of mind. Good luck