The Z4 power load has a 100% pure 360 composite design with an increased sweet spot and a 0.5oz end-load that gives hitters a little extra power behind their swing. Its premium composite barrel, stiff handle technology and patented three-piece construction give the Z4 power load the perfect swing weight, dramatically reduced vibration compared to other bats and maximum barrel flex for the best possible feel when you bring the bat through the zone. Patented TRU3 technology allows for independent movement between the barrel and the handle which controls vibration and provides unmatched feel on contact.