This vibrating chair was used from the time our kids were new-born up until they were toddlers. It has many different adjustments which accommodate a wee infant all the way to the toddler stage when it becomes a rocker and you take off the attachments. It has an attachment that when pulled, has a tune (which will drive you crazy but the little ones just love!). It has a belt that you can use to ensure they can't squirm their way out. I loved this especially at dinner time when I was cooking and wanting to entertain the babies but get stuff done in the kitchen.
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