Ideal for premature babies or babies who are a little small in weight or general size. My son was 7lb 6oz when he was born but on 49cm long, so he was too small for his car seat, his head flopped around and he was really uncomfortable. After purchasing the Kiddopotamus Snuzzler Complete Head and Body Support, he fitted into his car seat perfectly. It was wonderful. I would recommend this product to anyone who has a premature baby or a baby of small size or weight as it provides that extra bit of support that babies like that desperately need.