Prodigy numbers its plastics, and the numbers are a rough firmness ladder. 300 is the baseline putter blend, with 200 as the less-tacky version and 350 a firmer sibling. 400 is the grippy premium and the main line; 500 is stiffer and pearlescent; 750 is 400 with a firmer hand. The G versions, 400G and 750G, are the same plastics with Prodigy’s glide claim attached.
Air is the lightweight blend, and DuraFlex is the premium plastic for the entry-level ACE Line moulds.