This KingCamp neck pillow includes out cover and filling, which is detachable. When the cover is dirty, you can put it down to clean separately. The cover is cotton fabric, very comfortable feeling, help you to have a good rest and sleep. The inner filling is PVC air float, very easy to inflate and deflate. Both out cover and inner filling can be folded, very easy to carry and store. This pillow out cover has 5 colors, can satisfied different favorites, you also can buy two for replacing when cleaning. With cotton cover and PVC filling, the weight is light, easy to carry. This accessory is perfect companion for train and long time travel.