The Lousiville Slugger TPX Composite Wood Bat (TPXM110B) Features:

Northern White Ash encased in a clear composite shell
Resin, a harder substance than wood, fills the barrel grooves to support and absorb ball impacts for greater durability
Designed to significantly enhance the life span of a wood bat
Uniquely manufactured to sound, feel and perform like our popular professional wood bats
Ideal for high school, college, adult senior league and minor league professional baseball
30-day warranty