Sigelei 150w tc Silicone Case Protective Skin Cover Official Case Perfect Fit 10 Colors (Blue) Harmless 100% silicone material, environmental protection, do not shrink and deformation. A variety of color you can choose,the real OEM silicone material, more safe and environmental protection than others. Easy to carry, easy to clean,high temperature resistant,and keep bright forever. Flexibility is good, not easy to change shape, very solid,corrosion resistant, resistant to microwave radiation. *Precision cutting,suitable for all button completely,perfect fit sigelei 150w tc mod.