The DC Dressage was designed to remove as many pressures as possible, creating a safe comfortable communication. The key feature of the cheekpiece is the loose ring which attaches to the bridle, which can also rotate, ensuring the poll and cheek area is relieved from any rein engagement.
The reins are attached to the large dee, which swings open independently of the cheekpiece. The mouthpiece is fixed to the cheekpiece, with a solid surface area to encourage flexion. The Happy Tongue Straight is a solid mouth bit which is ported to relieve tongue pressure but is not curved. This makes it slightly harsher than the curved Happy Tongue.
The swivel mouthpiece can rotate on the horizontal, allowing the cheek piece to move independently, thereby the horse can set where it finds the mouthpiece most comfortable, removing tongue pressure.
This is a great training bit for home!