Reduced Resistance Technology (RRT) provides longer, straighter drives. Add 4 or more yards to your drive, while still enjoying the eco durability. Just like The Endurance tee, it will last 10 times longer than a traditional wood tee, and can't mark your club head. Made from eco friendly materials and breaks far less than wood tees. An inexpensive way of advertising your logo. make great inexpensive golf gifts handouts at trade shows or golf tournaments.