b'Oov Made of resilient high-density foam, the Oov fits the spine\'s natural curve and offers multiple planes of movement. It activates core stabilizing muscles and gently extends the spine to stimulate healthy intervertebral disc lubrication. Used in supine, prone, side-lying, kneeling and standing exercises.3 sizesMagic Roller Our most popular muscle-release tool, the Magic Roller offers a soft exterior skin for touch-sensitive users, and a dense core to "work the roller\'s magic."Rain Cloud Gray, 10104Swirlie Gray, 10105pilates.com 77'