Spin the 36” Diameter Plastic Hula Hoops (pack of 12) round and round and see how long you can keep them up. Spin just one at a time, or combine hula hoops and see how many you can spin at one time. This pack of 12 hula hoops is composed of two hoops in each of the following colors: yellow, orange, red, blue, purple, and green. The 36” diameter is a great size for older children, though younger children will enjoy the challenge. The 36” Diameter Plastic Hula Hoops (pack of 12) are made of a durable plastic. These hoops are sure to last for years of play.