The 2.25-inch IsoFlex Stress Relief Ball is a popular stress and tension choice for both the mind and upper body. Compactly sized for single-hand action. Each ball is filled with microbeads. Double-lined with natural latex for extra durability and to help prevent breakage, IsoFlex balls come in an assortment of marbleized designs with blending colors. Can help to alleviate pain, stress, and stiffness in the hand. 24 balls can fit in a light blue branded display case. • Age Grade: 5+ • Product Dimensions/Weight: 2.3 L x 1.8 W x 3.5 H / 0.4 lb • Inner Pack Dimensions/Weight: 10.7 L x 7.0 W x 5.4 H / 9.2 lb • Made In: United States • Batteries not required