Cocoon down pillow medium for plane train tent or cabin these are the ultimate lightweight travel pillows in their own stuff sack they compress to the size of your fist which makes them small enough to easily fit into your carry on bag pillows available with premium goose down dp or premium synthetic fill sp or spm the travel pillows with the synthetic fill either have a black nylon shell sp or a black nylon shell on one side and a soft microfiber shell on the other side spm