American Baton Company Skinny Mini. This fast twirling baton was introduced to twirling by ABC back in 1972 and is ideal for little twirlers with small hands. But many larger twirlers also use the Skinny Mini because of its outstanding twirlability. The Skinny Mini is thinner than all other ABC batons. 5/16" diameter.
How to measure: Have twirler stand with arm out from side at a 90 degree angle. Measure from under arm to tip of middle finger. OK to add an inch or so for growth.