Neue Schule Turtle Tactio Flex Universal Gag Bit

Turtle Tactio™ with Flex

Specifically engineered to accommodate the larger or sensitive tongue.  Often negates the need to shut the mouth.

Flex^T Universal

The Universal cheek provides a number of rein options including the option of a curb strap. But whatever option you choose, the flattened underside of the cannons with their anatomy-inspired recesses are held parallel to the tongue whatever riding activity you enjoy.

https://youtu.be/_i9AOhF4Sq0

https://youtu.be/bhz6YJSvUho