Feel nervous / sad / angry? The mesh squishy ball can help you vent your negative feelings. Also useful for helping you relax your hands.Helps the blood circulation in the hands Material: Soft rubber(Random Color Sent) Vent the ball has a slight odor (acceptable). And squeezing ball will be used a lot of energy, so the ball will shrink after use, which is normal. Includes: 4 squishy balls