The Infant Insert Heart2Heart allows you to carry your child in the ERGObaby carrier from birth (3 kgs). There is no reason to buy more than one baby carrier meaning you save money, and the Insert ensures that your baby is placed in the anatomically correct position for healthy spine and hip development. This insert is even easier to use and a special strap allows you to swaddle smaller babies and keep them close to you in those precious first few months. .