1 ,the material is silicone rubber. 2,the color is yellow 3, the hardness is 50 degree 1 ,the material is silicone rubber.2,the color is yellow3, the hardness is 50 degree4, when you put it under the sunshine for a while, and it can glow in the dark drawer.5,you can put your business card into it ,and you put it on your desk ,it will decorate your desk very beautyfull.