This catnip ball cat toy is upcycled from a lambs wool sweater that I felted in our washing machine and dryer. The colors in the wool are purple, lilac, yellow, red, and black. No two balls are alike since I cut the pieces from different parts of the sweater. The felted wool ball is stuffed with poly-fill and a heaping portion of catnip. This ball measures 2.5 inches in diameter (6.35 cm).