The Cocoon Nylon Sythentic Fill Pillow. All Cocoon Air-Core Travel Pillows feature inflatable air cores underneath a layer of premium synthetic or hydrophobic down fill and combine the comfort and support of superior pillows with minimum packing size. A twist valve on all pillows allows you to customize your level of comfort and support instantly. The new generation of Air-Core Pillows comes with zippers and exchangable air-cores! No more emergeny situations while traveling - even if no extra air-core is at hand, defect bladders can now be repaired or the Air-Core Pillow shells can be continued to be used with a sweater or a small blanket inside. Cocoon Nylon Sythentic Fill Pillow Features Travel pillow with optional filling Available with Goose Down or Synthetic fill A soft nylon shell holds the high quality filling for supreme comfort Machine wash (30°C). Do not bleach, iron, tumble dry or dry clean. Wash colours separately Ideal on planes and trains, in tents and cabins