I love these scarves and so do my customers. I call it a bubble scarf and it is a flat piece of felt into which I set marbles and then boil on the stove for a while. I let it dry completely and then remove all the marbles. The puckers stay put and the effect is wonderful. This is a beautiful emerald green polworth wool that I bought in WI a couple of weeks ago. Not as soft as merino wool but very useful when felted with the marbles as they tend to set up quite well.The orange scarf is what the bubbles look like when they are dry.