This 11" RIF softball has a firm center and is recommended for ages 12 and under. This Little League softball is NOCSAE Level 2 approved. RIF (Reduced Injury Factor) training balls are designed to reduce the severity of ball impact injuries. Great indoor and outdoor training. •RIF10 - NOCSAE Level 2 •ASA •11 inch •.47 COR •Firm Core •ProTac Cover •Red Stitch Color