Neue Schule Slimma WeymouthGives a good lifting action without upper palate interference. A very unobtrusive design that sits well back in the mouth over the thicker, less sensitive part of the tongue. The Slimma mouthpiece incorporates a wide low tongue bridge designed to eliminate any chance of upper palate interference whilst leaving much more space for the bridoon hence a thicker bridoon is an option for a horse that is tentative into the contact. 14 mm thick