This Worth RIF 1 Synthetic baseball is great for level 1 training from ages five to eight. It features a Dura-Hydec cover and extra soft Poly-X material, this item meets all NOCSAE standards and is perfect for tee ball. * Level 1 Training Baseball. Ages 5-8. Dura-Hyde cover. Extra soft Poly-X SOF DOT. No stamping. Great for Tee Ball. Meets NOCSAE standards