Rich colors will be more popular with children. Valuable Package: You will get 8pcs stress cubes, 8 colors, red, green, purple, dark blue, light blue, yellow, orange, rose pink, enough quantity can let you share with family and friends. Premium Materials: The stress relief balls uses high quality TPR, the ball skin is thicker, can be stretched, squeezed, not easy to break and easy to clean, the internal filling is Maltose and water, the slow rebound effect is better, if the appearance is stained with dust, you can clean with water, gently rub a few times, and you have a clean stress ball.