Marucci Junior Big Barrel 2 3/4" -10 Baseball Bat The CAT8 Junior Big Barrel is a USSSA certified, one-piece alloy bat built with AZ105 super strength aluminum alloy meaning thinner walls, higher response rate, and better durability. The precision-balanced barrel features a ring-free multi-variable wall design that creates an expanded sweet spot, while the patented AV2 Anti-Vibration knob produces a better feel and less negative feedback. Features: AZ105 alloy, the strongest aluminum on the Marucci bat line, allows for thinner barrel walls, a higher response rate and better durability Multi-variable wall design creates an expanded sweet spot and thinner barrel walls that are more forgiving after off-centered contact 2nd Generation AV2 Anti-Vibration knob features an upgraded, finely tuned harmonic dampening system for better feel and less negative vibrational feedback Ring-free barrel construction allows for more barrel flex and increases performance with no "dead" spots Precision-balanced barrel results in a lower M.O.I. and balanced feel for precision and control One-piece alloy construction provides a clean, consistent, traditional swing Professionally inspired handle features a removable taper and an ergonomic knob shape for more top-hand control and comfort Micro-perforated soft-touch grip with extra tack improves feel and control 2 3/4" barrel diameter USSSA 1.15 BPF certified One-year warranty included Recommended for coach pitch leagues (Ages 5-7)