As a little league coach, I can state the Champion dimple base balls are an outstanding value_ The Champion brand baseballs are perfect for any pitching machine requiring low seam practice balls. These balls are quality made solid polyurethane dimpled balls highly durable that will not dent any bat used! The perfect little league regulation size and weight practice ball. I have tried just about every practice ball on the market today, these are very comparable if not better than other brand names, like (Jugs, Diamond, Baden, Atex) Again, not only perfect for any pitching machine_ these balls can be used for general in/out field practice, soft toss, you name it_ a perfect ball for year around practice.