Korsteel Flexi Mullen Mouth Full Cheek Snaffle BitKorsteel Flexi Mullen Mouth Full Cheek Snaffle Bit The full cheek snaffle has narrow arms which project above and below the rings, preventing the mouthpiece from sliding in the horses mouth and to emphasize the turning aid. Flexi bits are soft and much warmer to the touch than metal bits. Ideal for younger horses or horses with a more sensitive mouth. The Mullen mouth creates even pressure on the bars of the mouth and the horse's tongue. To see more