Super-lightweight neck pillow with inflatable, exchangable air core and hydropobic down fill. The shell of the neck pillow has a zipper (to exchange the air core) and is made of cool 15 Denier Polyester on one side and warm soft microfiber on the other side.Specifications:- Size: 38 x 27 x 11 cm- Weight: 140 g- Packing size: 11 x 8 cmMaterial:- The hydrophobic down filling of the pillow retains its loft even in wet conditions and dries fast. The down is certified fluor-carbon free with no live plucking involved!Care:- Hand wash in lukewarm water with a special detergent for down products.- Do not bleach. Do not wring.- Do not dry clean.- Do not tumble dry.- Do not iron.- Wash colors separately. - Please remove the bladder before washing!