A Grobag Baby Sleep Bag is a wearable Blanket which will help keep your baby at a comfortable temperature all through the night. Sleep bags now are an integral part of establishing a baby's night time routine, and may actually help prevent some causes of crib death. The ideal time to start using a sleep bag is when your baby weighs more than 7 pounds (0-6 months size). Your baby's head must not be able to pass through the neck hole opening, and the baby's legs must have freedom to move about easily. The Grobag has the distinction of being awarded the Mother and Baby Gold in the Best Nursery Item category for many years.