- %100 silicon,
- 35 cm length,
- 10 mm inner diameter,
- 13 mm outside diameter,
- New colorful high-quality product,
- Orange and blue colour options.
Lax Vox Coloured Tube
Marketta Sihvo, Ph.D., a Finnish speech and voice therapist, introduced her LAX VOX -method giving workshops at numerous international voice conferences since early 1991.