Features: Our mini beach balls party favors are both reliable and safe, the soft texture and fun and colorful design make them the agreeable and popular stress relief tools for teenagers and adults. These soft foam balls can slowly return to their original shape after being squeezed, which helps to reduce your stress and anxiety from hard work or study, relax and stay calm, also they build finger strength and improve hand eye coordination, observation, attention and cognition. Specifications: Material: PU foam Color: as the picture shown Size: about 2.48 inches/ 6.3 cm Package includes: 150 x Rainbow stress balls Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays. These toys are suitable for people above 12 years old. These stress balls are packaged in vacuum, please open them as soon as possible after receiving and leave it for a period of time to restore it to its original state.