Sea To Summit says:

An extremely lightweight, compact and comfortable pillow, perfect for those on the move in the mountains or less extreme environments.

The Aeros™ Ultralight Pillow epitomises our design preferences for ‘light, compact and comfortable’. The result is a 20D laminated polyester  pillow with shapely support that can be packed away into a neat, small stuff sack.From the aeroplane to the mountains the, Ultralight is the perfect travel companion for those on the move.

We have updated the bestselling Aeros™ Ultralight Pillow to add compatibility with our unique Pillow Lock™ system.