This Snaffle has full cheeks and a jointed mouthpiece with three players. It is the traditional mouthing bit, and the players (toggles) provide the young horse with something to play with, encouraging mouthing and acceptance of the bit.
The full cheek prevents the bit from being pulled through the horse's mouth. Correctly used with fulmer keepers or FM keepers(sold separately), the mouthpiece cannot be turned over in the horse's mouth while at work.

Also, the full cheek provides more lateral control by creating light pressure on the horse's cheeks.