Cat toy yarn bell balls, suitable for cats of all ages. The product is made with full protection for small parts, comes in colorful style, each piece weighs 20g with a top decoration size of 4.3cm, and has passed ASTM F963 safety certification. It is designed for cat amusement, available in multiple combinations and quantities including bell yarn balls, silent yarn balls and mixed sets, which can be hung up and let cats play independently.