The VK reed is made of a composite material specially developed by Vandoren. This composite fibre material does not imitate the structure of cane. It reproduces its essential physical characteristics to obtain the same acoustic behaviour.

The VK reed strengths correspond to a 1/6 of a cane reed strength (see chart below). Two reeds of the same strength are strictly identical: unparalled consistency resulting in reliable strength, sound, articulation, projection and high note stability.