BEST SLEEP MASK MUST BE MADE OF TOP MATERIAL - Not only both sides are made of 100% top quality 19 momme mulberry silk, also the DOUBLE LAYER filling is of 100% silk.Only super-soft, super-smooth pure silk offers the breathable, cool relaxation of the soothing masks found at the worlds premier spas. SLEEP DEEPLY ANYWHERE ANYTIME - Get the benefits of total blackout, whether at home, in a hotel or on the plane (where bright led light and dry air can be especially harsh).The perfect travel accessories to help keep you feeling rested and refreshed. SOFT SILK ELASTIC STRAP - The sleeping mask features a comfortable-to-wear and pain-free head strap.Not to mention that the mask is extremely lightweight yet fits perfectly on your face to ensure a wonderful night! UNINTERRUPTED SLEEP WITH NO PILLS OR SUPPLEMENTS - Ideal for insomnia, migraine headaches and dry-eye sufferers, as the breathable, natural fibers of hypoallergenic silk allows healthy oxygen in while keeping dry air out; Smooth silk does not absorb skin lotions, so it won't mess with night eye creams or moisturizers on your face. GIFT IDEA - With a FREE luxury traveling bag, the perfect travel accessories to help keep you feeling good as well an excellent gift for family ,friends, shift & night worker who need deep, uninterrupted sleep and wake up refreshed.