For a limited time, we have our 2 5/8 all composite one-hand trainers available to you. One-hand (or one-arm) trainers help to show younger kids proper mechanics when hitting the ball, i.e. keeping your lead-hand through the ball and not pulling off like most kids do. The purpose is to promote muscle-memory and for kids to better understand and feel what each hand should be doing when swinging. Keeping your hands “inside the ball” will help to increase both power and contact. We have repurposed our older War 27/15 and 28/16 bats, so this is a real DSB composite bat which has been shortened to allow for one-arm training.