LOT number/ The lot number is the number for each pot dyeing unit. Even if the color number is the same, the lot number is different, so the color may not match. When purchasing, check the lot number and buy from the same lot number/ Knots may be produced in the yarn during manufacturing. / As the product is a space dyed yarn, depending on the ball there may be instances where the color and pattern appear differently.Do not use this product for purposes other than its intended purposes.