THUMBPRO WHITE LIGHTNING SIZE:Medium * Durable ABS plastic shell

* Durable ABS plastic shell with moisure wicking open cell foam headband

By taking what we learned from our first generation and overhauling our design

The CamWood Adult Hands-n-Speed Trainer is the only training baseball bat of its kind with a 12+ knob loaded design

Wood: Maple - Big League-grade Ink Dot certified

THUMBPRO WHITE LIGHTNING SIZE:Medium * Durable ABS plastic shellThumbPRO Sizing Guide To determine size, measure using a string or ribbon around the thumb halfway between the first and second knuckles. If you play with batting gloves, be sure to wear them when making this measurement. Large: 2 3 4" circumference (generally 200 lbs and above) Medium: 2 1 2" circumference (generally 125 200 lbs) Small: 2 1 4" circumference (generally for under 125 lbs) Use this as a guide. If in between sizes, we generally recommend