Baby jumper
The original baby jumper consists of a hoop suspended by an elastic strap.More elaborate baby jumpers have a base made of hard plastic sitting in a frame and a suspended fabric seat with two leg holes, often with trays holding toys.The Jolly Jumper brand refers to a Native American origin, where mothers used cradleboards to keep their infants in when travelling or working.warn against potential safety issues when using a jumper for prolonged periods of time, claiming that it could cause muscle imbalance if the baby is placed in a sitting position before they would be able to on their own[6].[7] The Government of Canada also warns about the head injuries linked to the use of suspended baby jumpers.