Backpack baby carriers aren't just for people who want to take hikes on nature trails with their tots in tow. Many parents use the carriers for less exotic trips to the mall, or just to walk the dog.
These backpack carriers are for children old enough to sit up independently, with full head and neck control. That's usually around 6 months of age.
Backpack carriers can typically be used to carry a child and gear totaling 30 to 50 pounds.