I used these for a month, but I'm selling them because they weren't compatible with the size of my pitching machine. They have some scratches, so they are not like new. From the manufacturer: Brand: TIGRE BLANC Material: Ethylene Vinyl Acetate (EVA) Color: Light Green Sport: Baseball Item Diameter: 72 millimeters Number of Items: 10 These are hole-filled balls perfect for baseball training. They can be used for batting practice, toss batting, pitching, and improving dynamic visual acuity, among other uses. The soft material has a moderate elasticity, making them suitable for both outdoor and indoor use. Also, because they don't travel far, they are effective in small spaces. Because they are plastic, they are less likely to cause injury if they hit you. They are fluorescent and noticeable, and they don't make much of a hitting sound, so you can practice at night and get ahead of your rivals. They are the same size as official baseballs, so you can practice with a more realistic feel. Please try them for high-quality practice, regardless of whether you are an adult or a child. [Specifications] Color: Light Green / Size: Diameter 72mm / Weight: Approximately 24g / Set Quantity: 30 pieces (2 mesh bags)