In golf, a tee is normally used for the first stroke of each hole, and the area from which this first stroke is hit is informally also known as the teeing ground. Normally, teeing the ball is allowed only on the first shot of a hole, called the tee shot, and is illegal for any other shot; however, local or seasonal rules may allow or require teeing for other shots as well, e.g., under "winter rules" to protect the turf when it is unusually vulnerable. Teeing gives a considerable advantage for drive shots, so it is normally done whenever allowed. However, a player may elect to play his/her tee shot without a tee. This typically gives the shot a lower trajectory.
A standard golf tee is 2.125" (two and one eighth inches) long, but both longer and shorter tees are permitted and are preferred by some players. Now, designs of these golf tees have a slight adjustment with the holster for the ball, better known as zero friction or more trajectory tees. These generally have a tri-holster, which some people find hard to balance the ball on. Ordinary tees can be made from wood or from durable plastic.
According to the R&A rule book, for a tee to be legal, "It must not be longer than 4 inches (101.6 mm) and it must not be designed or manufactured in such a way that it could indicate the line of play or influence the movement of the ball.
