Any mummies using tula carrier? What is the different between baby carrier and toddler carrier?

The difference is in the sizing. Baby carrier or standard carrier is for newborn up to about 20 kg. Whereas the toddler carrier is from about 20kg and up. If you intend to use the standard carrier with a newborn, you'd need to use an insert along with it. It's not advisable to use a toddler carrier for a newborn as the size wouldn't fit. Can refer to the link below for a comparison on the sizing. http://www.tulababycarriers.com/pages/best-baby-carrier-options