Western mullen mouth bits are often used for young or green horses moving up from a snaffle. Western mullen mouth bits are mild bits with a one piece bar across the horse's mouth. This bit applies equal pressure to the bars and tongue of the horse. Happy Mouth mullen mouth bits are made of an apple scented polymer that encourages the horse to accept the bit. It is a gentle bit and a great option for starting young horses. We carry Western mullen mouth bits from brands you trust like Professional's Choice, Happy Mouth or Turn-Two Equine. All our Western mullen mouth bits come with the Equestrian Collections 100% Satisfaction Guarantee.