We have two different types of sleeping bags:Fuji Sleeping bagwhich is like a nightgown for babies(sleeping gown) with elastic at the bottom and buttons at the front. The design means that the same size fits babies from 0-6 or 6-12 months. It therefore replaces a regular baby pyjamas, e.g. a jumpsuit . 2)Laucala Sleeping Bagreplaces a quilt. This type of sleeping bag (sleeping bag or sleep sack) is widely used in large parts of the world, including England and the USA, and is recommended by pediatricians for the baby's first 18 months. It partly eliminates the risk of the baby getting the blanket over its face at night, and partly of the baby kicking off the blanket and becoming cold. Both are made of soft organic cotton and they can be used with advantage.