This 11″ RIF softball has a soft center with ProTac synthetic leather cover and is recommended for ages 6 and under. RIF (Reduced Injury Factor) training balls are designed to reduce the severity of ball impact injuries. Great indoor and outdoor training. �Reduces the severity of ball impact �11 inch �.47 COR �RIF – Level 1 �Soft Core �ProTac Cover �Red Stitch Color