This 4 ply Rayon thread is woven with three strands of metallic, giving it a highly textured and intensely sparkling surface. Comparable in weight to a #8 Perle Cotton. Sizzle is stiffer and heavier with a coarse surface that makes "sizzling" noise when you run your finger across it. This is the ultimate thread when you want to add a lot of texture, dimension, or eye catching stitches to any project. Sizzle can be easily interchanged with Razzle and Dazzle in most applications.