Silk Works pure silk eye masks are carefully crafted from the highest grade (6a) Mulberry Silk with 22 momme thickness, 100% silk fibre filling and an elastic silk covered band. The smooth silk fibres naturally hydrate the skin around the delicate eye area whilst blocking out the light for a deeper, uninterrupted night's sleep. Naturally hypoallergenic being the perfect choice for sensitive or allergy prone skin. All Silk Works Eye Masks come packaged in a beautiful gift box. Machine wash on a delicate or silk cycle using cold water and a pH-neutral silk detergent. Place the eye mask inside a mesh laundry bag to protect the fabric. Do not bleach or tumble dry. Lay flat to air dry away from direct sunlight. For a smooth finish, iron on a low heat setting.