Yvonne Welz

Yvonne uses and recommends a specific style of bitless bridle as particularly suited to academic riding, due to its positive affect on the horse’s poll. These are also known as bitless wheel bridles. She calls this style “bitless bits” because they are metal wheels, yet do not go inside the mouth. There are a few brands she likes: LG Zaum from Germany, Star Wheel from Sweden, and the Orbitless from the UK. (Source)