Sea to Summit Pillow Aeros Premium The Aeros inflatable backpacking pillow has changed how thousands of people sleep in the outdoors or while traveling. For support and comfort, it has a super soft brushed 50D polyester knit exterior and a silent, contoured TPU air bladder. Because of its patent-pending multi-function mini valve, inflation, adjustment, and deflation only take seconds. In addition, the unique Pillow Lock system secures the pillow to your sleeping mat. Inflate the pillow in a few breaths and fine-tune it with the multi-functional valve. The brushed 50D polyester knit is exceptionally soft and comfortable. Internal baffles that are curved provide shapes that cradle your head. The scalloped bottom border of the pillow aligns it around your shoulders whether you sleep on your back, side, or upright in a chair. The synthetic fill between the contact surface and the TPU bladder improves ventilation for further comfort.