The Neue Schule Turtle Tactio Flex Eggbutt Snaffle Bit is an innovation that is brilliant in helping to promote comfort and contact and discourages fixing and blocking

Turtle Tactio with Flex encourages the horse to round over the bit and lift through the shoulder.  It sits flat and comfortably against the tongue and reduces pressure over the sensitive outer edges of the tongue and bars.  

It's also good for training / dressage as it gives the rider greater shoulder control on a circle and helps set up the bend when changing the rein or with lateral work. The stability the eggbutt offers along with the clever design of mouthpiece often proves useful when working towards a consistent more even contact. Often recommended for horses with a short tense neck.