It is red heart super saver, no dye lot, medium worsted, and I believe it is acrylic. I got it at Wal-Mart, I dont have the wrap anymore for this. But I pulled the same up online and that is what it says. Thats for the pink and yellow. The neon is from hobby lobby and it is just a neon mix brand name "i love this yarn" neon. It is acrylic and medium weight.