Forget everything you've ever known about composites! The B4 is everything a composite bat should be, and more! The B4's ancestors were some of the hottest bats on the market. COMBAT has taken everything they've learned after the release of the B1, B2, B3 and B3 Gear to finely tune the B4 and develop the ultimate composite bat! Using Maximum Allowable Performance (MAP) Technology, COMBAT has created a bat with single wall construction allowing for a longer barrel length and lighter swing weight, resulting in MAXIMUM ALLOWABLE PERFORMANCE! The one-piece 100% composite frame uses Blended Fiber Technology where Aramid fibers (found in bulletproof vests) are combined carbon and fiberglass in varying proportions. The precise angles created results in more energy transfer to the ball and ultimately more trampoline effect! COMBAT also employs Variable Stiffness Technology (VST) to give the B4 a HUGE SWEETSPOT! VST works by increasing the stiffness in the handle, which consequently reduces vibration, and decreasing the stiffness in the barrel, giving the B4 what COMBAT likes to call a Super Sweetspot Size!! The B4 has an ultra soft feel that players will love and performance that will be talked about for years to come! COMBAT: For Players, By Players! The B4 is approved for play in Little League, USSSA, Babe Ruth, Dixie, Pony, and AABC. It is backed by a Full Twelve (12) Month Manufacturer's Warranty. Free Shipping!