Thank you. How about these for winter practice hitting? I've washed all the balls to deliver clean ones. The sand and dust are gone, but some black stains remain. These are used, soft baseballs for batting centers, equivalent to M-size balls. They cannot be used in official games. How about them for batting practice, such as toss and tee work? Inspection has been carried out, but please be aware that there may be dirt, wear, tears, and occasionally cracks. Packaging is recycled cardboard. Please refrain from purchasing if you are sensitive to these issues. Please enlarge the photos and only purchase if you understand the condition. Type... Balls Sport... Soft baseball #baseball #softball #softbaseball #practice #used #self-training #Mball #mball #softballs #softbaseballballs #nankyuball #youthpractice