Features: brand new and high quality There are two thickness options. The exposed part is the transparent HTV+PC double-layer composite silicone material. After pressing and installing, it can be deformed according to the tolerance and uneven surface of the shaft cover for better fit, and the sealing and cushioning effect is higher than that of the single-layer version. When installing, it is recommended that the frosted surface face down to the shaft for seat, and the reflective surface face up to the shaft cover. It is not recommended to install and use repeatedly, because the secondary installation has already formed uneven surface deformation with the shaft at that for time. The sound is crisper than a single layer. In short, the thickness of the single layer is large, but the elasticity is high, and more switches are matched. It is most suitable for the switches with small for gap. The double-layer has more functions and better airtightness. It is suitable for large for gap but can not be reused. If you just want to solve the shaking, the effect of the two is the same. Specifications: Type:Single Layer,Double Layer Single Layer Thickness:0.3mm Double Layer Thickness:0.16mm Net Weight:30g Package Includes: 1x MX Switch Film note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.