Specification: Material: TPR Color: red, yellow, blue and green will be shipped randomly Size: 4.5 cm in diameter Adsorption principle: vacuum adsorption Goods list: Decompression balls (random color) * 5 Fluorescent sticky target decompression: TPR, wrapped in silicone material, soft and elastic material, can protect baby's fragile gums. Environmentally friendly raw materials, non-toxic and harmless. Pressure relief ball: Dissolvable, release internal pressure, whether it rocks, pushes, pulls or bounces - they immediately return to their original shape. Repeated use: the surface is easy to clean. After use, the surface will pick up some dust, the viscosity will decrease, and the viscosity will recover after washing with water. The perfect soft pressure relief ball: Easy relief of the soft pressure ball These sticky balls can be thrown on the wall, wait for the balls to slowly drop, and then catch them. Widely Used: Very suitable for classrooms, homes or offices, very suitable for teachers, students and other people.