Are They Legal?
That’s what your partners will ask when they see your drives. And you can proudly tell them "Yes, they’re legal." (The official verbiage is: "Martini Tees have been evaluated by the U.S. Golf Association, and conform with the Rules of Golf." But you don’t have to say all that.)
So, yes; feel free to use Martini Tees in any tournament using USGA Rules. In fact, there are LPGA golfers on the Duramed Futures Tour now using Martinis.
The next question from your partner is usually: "Can I try it?" No USGA rule says you have to say yes to that one. But you can at least direct them to our website.