Studio-Assets Muslin 10'x12' - Chroma Key GreenStudio Assets Muslin 10'x12' Chroma Key Green The 10 x 12' Solid Color Chroma key Green Muslin Backdrop is constructed from 100% cotton muslin. At the top is sewn a pocket to hang the muslin onto the cross bar of a background system. It is machine washable on the gentle cycle using cold water and a mild detergent. The muslin is mill dyed using reactive dyes and then steam dried allowing it to be lightfast so it won't fade over time.