Adjustable Golf Tees Tee Off with Greater Consistency Perfect Aiming Unbreakable Golf Tees Excellent Durability and Stability Tees, Perfect Aiming Proprietary Material: Made of a proprietary Special PC mixture that is much stronger than other plastic tees. One pack of four birdie1 Tees lasts the average golfer a season. Innovative Design: Exclusive Technical design helps you achieve consistent golf shots and make golf games easier. Reduces Friction & Side Spin: Oversize microprotrusion head reduces friction and side spin for optimal accuracy & distance and protects your club faces. The golf tee can be raised, lowered and adjusted, allowing golfers to hit their tee shots in the correct direction.