This can be made with any lace weight yarn of any fiber. This pattern is originally in a kit to make a cozy that fits inside a clear travel mug as part of the insulation and is repeated here if lost from the kit or it can be used for any other travel size mug approx. 6” in height and 12” circumference at the top and 10” circumference at the bottom. Putting the cozy inside the mug is a little fiddly.