This Kurt Adler 65mm 12 Days of Christmas Decorative Glass Ball Set of 12 is a fun, festive way to add to the decor of your Christmas tree. Each red ball ornament in this set of 12 displays a beautifully detailed image, each representing one of the 12 days of Christmas as described in the classic song. For example, the first ball displays a partridge in a pear tree, the second ball displays 2 turtle doves and so on.