The Callaway XT Set is the perfect fit for maturing golfers who have a passion for golf, and who want a complete set that will help them raise their performance. XT is especially suited for players between ages 11 and 13 who are growing, getting stronger, and developing their game as they look to move between a true junior set and an adult set. And with industry-leading Callaway technologies including a titanium driver and graphite shafts, it has everything they need to add distance, hit their best shots, and shoot their best scores.