Worth Eclipse Softball Fastpitch Bat 28/16 Ounce The Ultra-Light -12 design gives a better combination of swing speed and power for maximum ball explosion 100-Percent Composite -12 Fast Pitch Bat (28-Inch/16-Ounce) FAST45B Eclipse grip changes color in sunlight and also provides ultra soft touch and maximum sting and vibration reduction Approved by ASA, USSSA, NSA, ISF and all other associations 1 year warranty