Thank you for viewing. This is an Insider Bat for elementary school students, size 6 (under 12 years old). Please check the photos and ask any questions you may have for details. We are looking forward to your consideration if you understand that this is a used item. Immediate purchase is acceptable, but please ask any questions you may have before purchasing. We are also selling other baseball training-related products. ===== Product Features ===== ・Current Major League players and USA Women's Softball National Team players also use it for practice and have experienced the effects of the "Insider Bat"! ・Practicing with the Insider Bat prevents the bat's path from going around and allows you to swing in the shortest distance. You will be able to pull the ball and hit it to all fields, and your body will not open up until you catch the ball. It encourages the correct way to hold the bat. ・It prevents the batter's wrists from turning over too quickly and corrects them appropriately. 【Effects】Improved contact, increased swing speed, increased distance, form correction, confirmation of form before games, ability to see the ball, fewer strikeouts 【Practice methods】Swing practice, tee batting, toss batting, etc. ※ Cannot be used with hardballs or softballs. Please practice with tennis balls, Wiffle balls, sponge balls, or soft balls. ・U.S. Patent Granted (Patent No.: US 8,272,978 B2) Sports Softball, Baseball Brand Insider Bat Material Aluminum Color Red/Black Handle Material Rubber Size 6 (under 12 years old): Total length 56.5cm, Grip 22.5cm, Weight 350g Inside-out Red Black