I attached this to a stroller a couple of times, but my child didn't show much interest. The star-patterned part is a rattle that makes a sound when shaken. Pulling on the bear makes it vibrate and go up. This is a used item, so please understand this before purchasing. Price reduced from 2500! This soft bear rattle with star-patterned ball will attract your baby's interest. - Design: Bear-shaped rattle - Colors: Brown, orange, green - Features: Star-patterned ball - Material: Soft fabric - Size: Approximately 25cm in total length Thank you for looking.