surprise! squeeze each boa™ ring and guess what animal sound you hear ... Features: Squishy rings each with a different sound and texture. A spine to stack the rings on.A giggling head to congratulate baby when stacking is done. Benefits: Tactile stimulation. Auditory development. Flexible thinking. Dexterity. Explorative play. Fine motor skills. Hand-eye coordination. For Ages 6 Months+