4 PCS Laptop Stand Heat Reduction Pad Cooling Cool Feet Holder Skidproof Cooler
2 big cooling pad and 2 small cooling pad can be used together, it will not do harm to your computers. Size: Large Mat: 25x45mm/0.9x1.7in, Small Mat: 15x35mm/0.5x1.3in. Cooling Pad only, other accessories demo in the picture is not included!