If the second one is the case, then you should consider a carrier with
enough safety restraints to keep your baby secure during heavy activity as well as extras like storage pockets, a sun cover and a pacifier ring.
Any
restraint is better than none at all, but an appropriate child
safety seat provides the best protection in a crash until children are large
enough for adult
safety belts to fit properly, usually when a child is about 4 feet 9 inches tall and 80 pounds.