A while ago we bought this baby sleeping bag by Ergo Pouch and I definitely recommend it. No need for blankets and really, really good to get a wriggly baby into plus great for changing nappies in the night. A bonus is it is all organic cotton. There a few other weights we have not tried yet. The only downfall is the size, at six months old our baby fills the length of the 2-12 month old size so we will only get a few months use out of it rather than the 2 years you can get out of the thinner merino style sleep sacks you can find everywhere. Buy them locally at Father Rabbit or the Sleep Store.