bintiva Balance Pods Set - 1 Pair Hedgehog Style Domed Stability Pods for Children and Adults The Bintiva Balance Pods are crafted from professional grade materials and are recommended for both adults, and children. Balance Pods were designed for developing and maintaining core strength including the muscles of pelvis, abdomen and back. The pods can be used for a number of exercises that can help with balance, coordination, body toning and posture improvement. The balance pods feature tactile bumps, and can either be used with the dome side up, or down, for varied levels of difficulty Each pod measures approximately 6.25 inches in diameter, and the height is 3.5 inches. A starter guide is included in the box.