When you make a pattern and use a wool to do it, it would be great to write the number of meters or yards a ball contains and also the weight of a ball and the size of the wool. This allows you to check if you have another wool at home that would be suitable and especially that you have enough. And for our machines it is essential to choose a good size of wool. All this information is on the label. Otherwise you have to search the internet for all this information.