Mylar Crinkle Ball Cat Toy - 5 Pk Mylar balls cat toys are shiny colorful cat ball toys made of Mylar paper. MYLAR balls crinkle cat toys kitten toy balls have an intriguing sound that interests cats of all ages. mylar cat toy are lightweight toys, easy to bat, toss, carry and hide around the house. mylar crinkle balls cat toys measure 1-1/2-inch in width and are great for tossing, chasing and pouncing mylar crinkle balls in this pak total 5.