Weplay Twisters are designed to provide tactile stimulation and improve circulation. The set comes with 3 levels of resistances, each in a different color, which gradually helps users grasping, twisting, and squeezing abilities. The tactile surface enhances the sense of touch. This exercise promotes flexibility of the wrist joints. Product Weight 0.5 KG Package Size L15 x W7 x H17.5 (cm) Package Weight 0.52 KG Product Feature: Three levels of resistance allow users to enhance their grip strength step by step. Play Value: Strengthen hand and wrist muscles when a user holds, squeezes and twists Weplay Twister. Ideal for improving the flexibility of radiocarpal joints. The tactile surface enhances the sense of touch. Stabilize emotions through holding, pressing, and twisting the product. Specification: Components: Wepaly Twister x 3 (yellow x 1, green x 1, blue x 1) Dimension: Ø 15 cm, thickness 3 cm Material: High-quality Plastic Country of origin: Taiwan Warning: Broken parts of this product can be small and present a choking risk. Not for children under 3 years. Use under adult's supervision.