This product is a Berkley X5 Braid Low-Vis Green 165yd 20lb Fishing Line Filler Spool. It is a type of braided line used for fishing, with a line weight of 20 lb. The color of the line is green, and it is made by the brand Berkley. The product comes with a warning that it contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.