New Marucci Echo DMND 11 Fastpitch Softball Bat 1 Piece Composite Wh Gld Size:28 17 Ringless barrel design made of 1296009 001 Yth 6Y Blk Gry Ringless barrel design made of multi variable wall thickness for a more flexible sweet spot Carbon composite barrel end creates an ultra light swing weight for maximum bat speed One piece hybrid design engineered and built with the highest grade alloy available Micro perforated touch grip for superior feel and control lightweight SPRINTSKIN upper featuring SHOCKWEB to further reduce weight The one piece construction of the Echo DMND is made from Marucci's MDX Max composite material which utilizes a multi directional composite weave which situates a precise amount of clear liquid gel into the knob to dissipate vibrations and sting