1. Material: EVA/wool
2. Power supply: contains a button battery
3. Application: cat
4. Features: each color has a different sound, open the lid, you can add catnip in the ball, high-sensitivity built-in sound, light touch can make a sound, the material is safe, and the touch is comfortable
5. Size: about 5.5 cm/piece for wool, 5 cm/piece for EVA
6. Weight: about 21 grams per piece for wool and 12 grams per piece for EVA