Jump'In Small cheek Flat Leather Pelham bitComposition: Nylon lined leather. Important note to our clients: leather bits are not guaranteed against bites even after the first use. Effect: The Pelham bit is a great compromise between the bridle and the double bridle. It offers a lever action that is more or less strong, depending on the cheek's length, the curb chain adjustment, and how it is assembled. This bit causes the horse to give in at the neck and applies pressure to the mandibles.