Thank you for viewing. I purchased this here previously, but it didn't suit my son, so I'm putting it up for sale. I've used it for about a month since I bought it, but the previous owner said they used it for about six months. I don't know the usage environment, but since I bought it, it has only been used for my son's practice and games. Although it's a layman's inspection, I don't see any tears or cracks in the urethane. Product description, quoted below: 1. Double-layer structure By layering PU materials with different repulsion forces to create a double-layer structure, a PU thickness of "approximately 16mm" is achieved. The bat's deformation rate at impact increases, suppressing the deformation of the ball, and the energy with which the ball tries to restore its circular shape is suppressed, pursuing the principle of increasing the flight distance. 2. J-grip Naturally leads to an inside-out swing, and also enables a "level swing" that allows you to catch the ball with a line. It also reduces damage to the grip, which has the effect of reducing injuries. 3. Hyper Whip (HYPER WHIP) A head cap that can be achieved because of the J-grip bat with a fixed hitting surface. The head balance on the hitting surface side is made heavier to increase head speed. <Bat Specifications> ● For junior boys ● Soft baseball bat ● Manufacturer: Mitsuwa Tiger (MITSUWA TIGER) ● Series: Revol Tiger Hyper Whip Double Layer ● Size ・76cm・560g average ● Part number: MT7HRB12 ● Color: BLK×PNK(212), Black x Pink ● Material: PU, Carbon ● Top balance We recommend replacing the grip tape! We will lower the price at our own timing, so please refrain from price negotiations.