Sierra Designs made its DriDown Pillow specifically for backpacking with a light weight and convenient compressibility. Water-resistant DriDown 600-fill down keeps your head warmer and dries faster than standard down insulation, so you can take the comfort of a down pillow into the outdoors without the risk of ending up with a soggy lump of feathers. The polyester taffeta insert is nice and cozy, and you can remove it when you're trying to shed as much weight as possible. The ripstop shell is durable to handle many years of backpacking and camping, and the stuff sack keeps it nicely compressed for compact storage.
My best pillows EVER! I love everything from Sierra Designs!