The Swing Sync Baseball Softball Tee Attachment Trainer is a portable training aid designed for both kids and adults. This trainer is perfect for batting practice and features a sturdy construction with a 1-year manufacturer warranty. The white color and one-size-fits-all design make it versatile for players of any age group looking to improve their swing. Whether you're a beginner or a seasoned player, this trainer is a convenient and effective tool for enhancing your baseball or softball skills. This trainer is brand new but one of the seals was broken. Wanted to be transparent but again the box was never opened and the trainer never used one time.