Introducing Jim, the Chalk Board Jim originated when I created the first prototypes with the helpful advice from Jimsy (Jim). It is compact and convenient, meaning it works great for warm ups and strength training. Pockets range from 8 mm to 18 mm with options for 2 finger and 3 finger pockets. The curved edge aids in preventing finger injuries which are never fun. Snag a CB Jim for yourself and one day maybe you will be as strong as him.
