Stretto Colore Humidifier Extended Performance Model

The Stretto Colore humidifier for violin & viola offers slightly more humidification than  the original Violin Stretto model. Safe and effective protection from dry conditions., This in-case humidifier from Switzerland includes 2 reusable bags containing a unique medium that retains moisture much longer than regular sponge; simply soak in water as per directions, place in Stretto container & attach to side of case (Velcro provided).