It allows us to put him in many different posistions. Be on the look-out for a rear facing infant car seat that goes over 20 pounds. They are almost impossible to find and become a necessity very quickly. A suction pump can be your best friend when your child is sick. It helps you to keep the nose clear and allow the child to eat and drink.
Most stores carry a nasal aspirator with a removable tip for the nose.
We use that at the end of the suction tube to prevent irritation and bleeding in the nasal passages. This is tricky due to lack of muscle tone, but with careful practice we are able to take him into pools during the summer. Weightlessness in the water is very soothing to him. Buy a good life VEST just in case. He also loves floating on an inflatable raft, he will fall asleep if we let him.