All LightWing Studios musical instrument accessories are designed by musicians and for musicians to preserve the value of your Axe with a minimal investment. They're Made In America of 100% Green Materials...a proprietary blend of double layer Cotton / Silk Satin and Cotton Flannel inspired by material found in Astronaut Space Suits which aids in balancing the humidity in your case. And they are safe on ALL finishes including Nitrocellulose, produced with uncompromising quality and backed by Customer Service second to none.