I use a ring sling with my almost 2 year old and I started using it when he was a few weeks old. I like them because my husband and I can use the same one since it adjusts so easily. I also like that it fits perfectly after delivery when I have the post-baby belly and 2 years later when 'some' of that is gone :) It adjusts around the baby, so you slip it over your head, sit the baby in it, and pull the fabric to snuggle the baby. You can use it when they are sitting up, laying down and it was wonderful for breastfeeding in public.