Adequate Package : you will receive 40 pieces smile face stress balls, about 6.3 cm, Sufficient grip to allow you to fully release the pressure; Sufficient to meet your daily use and replacement needs, you can also share it with your friend and family to pass on the mystery of happinessElastic and Comfortable Material: these foam stress balls are sponge, safe and , light and soft, and surface, strong and wear resistant, reusable; They are elastic, no matter how much pressure you put on the ball, it will bounce back, Lightweight and Portable: face foam stress balls measure 2.5 inches and have a , rounded surface, making it easy to hold by one hand; These stress relief balls can be placed anywhere you , such as your living room, bedroom, desk, or even your or carStress Relief: these smile stress balls can be pressed at will, soft and elastic, when you feel stressed, you can use to vent your emotions and relieve your anxiety and irritability; it can relieve stress and practice and wrists, suitable for classrooms, offices, and other stressful environments, will take your stress and make you , give you courageWide Range of Applications: these stress balls are cute and small, suitable for any ages, also suitable as party favors, Christmas gift bag fillers, birthday party favors, carnival prizes, games, classroom and school rewards, birthday party decorations, and moreColor: yellowMaterial: PUPackage Contents:40 x Stress BallsOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.