All items brought onboard count toward the Carry-On Baggage and small personal item piece limit except the following:Coats, hats, or umbrellas;Reasonable amount of reading material;Infant/Child safety seats, baby carrier backpack, strollers (based on space availability; space guaranteed only with the purchase of a Ticket for the Infant);Mobility/Medical Assistive Devices, such as wheelchairs, canes, crutches, continuous positive airway pressure (CPAP) machines, POC, etc.;Service Animals or properly trained and documented Emotional Support