Perfect for gram counters, the Aeros inflatable backpacking pillow has a soft 20D stretch polyester exterior and a silent, contoured TPU air bladder for support and comfort. Inflation, adjustment, and deflation take seconds, thanks to the patent-pending multi-function mini valve. We have updated the bestselling Aeros Ultralight Pillow for 2019 to add compatibility with our unique Pillow Lock system. Inflate pillow in just a couple of breaths and fine-tune easily with the multi-functional valve Stretch-knit 20D polyester knit is very soft and comfortable Curved internal baffles create contours that cradle your head Scalloped bottom edge centers pillow around your shoulders whether you are sleeping on your back, side or upright in a chair RF welded for strength and durability Face fabric laminated to a silent, high strength TPU air bladder