Please note that this is not Opal yarn. 50% Acrylic 50% Wool 1 ball is over 40g (The label says 100g, but I actually measured it and it was 46g) Also, the label says 425m, but I haven't measured it, so it's unknown. The gradation is beautiful, so how about using it to make small items like hats and mufflers? The label will be removed and the yarn will be compressed for shipping. It will return to its original shape after opening.