REVERIE Essentiel pillow with ultra-comfortable support. The Microstop® dust mite treatment is hypoallergenic. Tested under medical control, it is totally safe for humans. Fantastic value for money! Filled with hollow silicon polyester flakes that mould to the shape of your head.CARE INSTRUCTIONS: washable at 60°. Sold individually or as a pack of 2.COVER: 100% cotton treated with MICROSTOP® for protection against dust mites (effective even after numerous washes).