Double lid valve and adjustable height: Level 1 pumps only the lower chamber, and Level 2 pumps only the upper chamber or both chambers full height. Special valve for easy inflation. .NO AIR PUMP NEEDED: We've tested it. Inflating with your mouth is faster than with a manual pump, saving you the hassle of carrying a pump and making noise when flying. .Note: Emirates, Korean Air, EgyptAir and Qantas do not allow the use of this product on your flight. For other airlines, please contact the staff. . Must have airplane travel accessories for parents: Fill the gap between the two seats with this travel pillow to extend the seat length. The extra surface allows kids to lie flat or raise their legs for better sleep, or be a platform where kids can play and relax. "all Products From Us Have Undergone Strict Quality Checks. if There Is Any Quality Problem Or You Are Not Satisfied With The Product contact Us. we Will Give You The Best Solution."