●【Durable Material】Made of durable synthetic leather cover and rubber core. With competition level double-stitched seams,durable. Rubber filling provides softer touch and greater elasticity, reduce impact and provide soft touch. ●【Standard Size】The diameter of soft baseball is about 2.8 inch, and perimeter is 9 inch, which is the same size as a normal baseball. In addition our foam balls can be nicely matched with baseball pitching machines. ●【Improve Baseball Skills】Prefect for recreational use,practice or casual games. Good for building confidence and improving skills for youth baseball players ages 18 & under. Suitable for softball training for children and teenagers. ●【12 Pack Training Baseballs】 Each package contains 12pcs baseball and 1 mesh drawstring bag for easy transport. Enough quantity can satisfy your various using needs. ●【Unmarked Baseballs】Unmarked surface provides spots for users to sign their favourite teams and motto.You can write or paint anything you want.