Sylva and Betula are made from beech and birchwood, respectively. The Sylva is a lightweight resistance, weighing around 130 g, and the Betula is considered heayweight resistance, weighing 140 g. The Khaya is made entirely from mahogany with a tunable/light resistance, weighing in at around 125 g. Horn-craft Mutes are produced in the Netherlands.
Compact – Aluminum – Can be stored in instrument bell in case. Lightweight, compact, modern design. Designed like a straight mute with wide corks where the sound passes alongside the mute, rather than a traditional practice mute where the air is directed through the mute.