What are Viowiess mutes made out of? Modern Materials All our mutes are made with a specialty synthetic polymer.We've carefully selected our materials to mimic the softness and elasticity of natural rubber. We calibrate the density to assure proper flexibility and to create optimal sound quality.The specialty polymer is eco-friendly. It is recyclable and takes 3-5 years to biodegrade if landfilled. William WiessmeyerAugust 3, 2020viowiess, 3DS mutes, prizma mutes, cello mutes, performance mutes, string mutes, viola mutes, violin mutes, practice mutes, catrpilr mutes, violin, viola, cello, orchestra Facebook0 Twitter 0 Likes