The Bottle Tee was made and founded by a company called Greenskeepers, Inc (Who also make the 4 Yards More Tees). Greenskeepers was founded in 1996 as one of the first groups to create non-metal cleats. Their invention and traction technology is still being used today in many manufacturers today. Today, along with other products in their lineup, the Bottle Tee is one of their shining stars in the golf business. The Bottle Tee will help you develop a powerful new driver swing that approaches the ball from the inside out and the upswing. By doing this, you will be producing the longest, straightest drives you have ever hit.

Product description on amazon – “The fun practice tee that helps train you to swing from the inside out and hit up on the golf ball for longer drives.”