The Aero-Bat is a variable and concentrated wind resistance Baseball bat training device that is perfect for warming up and increasing swing speed.   Our patented wind resistant pineapples are easily interchangeable and made to concentrate wind resistance at the ball impact point.  The baseball bat is flexible, providing a great tool to train timing, tempo and lag.  The Aero-Bat comes with 3 standard sized pineapples.  They can easily be removed and/or added to the bat to increase or decrease wind resistance.  The Aero-Bat is a perfect On-Deck warm up device.  We are not a weighted product.