This EquiKind loose ring allows movement in the horse’s mouth whilst the ripples on the mouthpiece add a little pressure for extra control. Mouthpiece thickness: 18mm. Cheek height: 65mm. Stainless steel with EquiKind softy coating, offers a soft-touch lightweight mouthpiece that warms quickly to the horse's mouth. The supple mouthpiece is kinder, ideal for young horses or those who reject metal.