I chased a foul ball within the team and crashed into the fence, but I was wearing a chest protector, so I didn't get any injuries. As expected, I think it's necessary to protect the safety of children. I realized the importance of it because I was wearing the same product and avoided injury. There are no noticeable stains, and I think it's still in a clean condition that can be used, but since it is a used item, please refrain from purchasing if you are nervous or seeking perfection. There is no deterioration. Please understand that it has been stored at home before purchasing. ● Hardball, softball, and soft-ball compatible chest protector ● Manufacturer: Mizuno ● Color: Black (09) ● Size: For those under 155cm tall ● For both right-handed and left-handed throwers ● Material: (Outer fabric) Nylon, Polyester / (Pad) Polyurethane Designed to fit the body and be worn inside the uniform.