Air Cushion Lumbar Support Cushions Backrest Cushions With Pump Red : Built-in environmental high-pressure TPU inner core, which can be manually inflated with pumping ball You can determine your intake according to your own habits to get the height that makes you feel comfortable Small, can be folded, not flattened, convenient to use during business trip and travel The pillowcase is designed with a zipper and can be removed for cleaning Applies to , work, driving, etc, our and neck get tired easily Specification: Material: cotton Size: . 22x45x10 cm/8.7x17.7x3.9 inch contains: 1 inflatable pillow Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.