Reebok Vector O Comp Senior League Bat 2-5/8-Inch diameter barrel and ultra-light -8.5 length to weight ratio O-Technology reduces drag through the entire swing pattern providing increased swing speed compared to more tradtional bat designs. New Composite Barrel offers unequaled forgiveness, power and performance. Designed with patent pending, TLS Connection Technology System Equipped with an extended barrel profile, maximizing the hitting area.