The Baby B'Air Flight Vest is the only safety solution for lap held children who fly. The patent pending design secures your child to your lap belt to protect your child against turbulence and to keep your child safely on your lap during flight. The Baby B'Air allows you to keep your lap child safe and secure during flight, yet still have your hands free. The parent can read, eat or even nap knowing their baby cannot fall or pull from their loving arms. Small - Infant/Newborn-most children up to 6 months. Large - Toddler--most children from 6 months-2 years.