The smooth, silky texture is comfortable over the eyes, and offer 100% light blockage. | These flexible silk lucid dreaming eye mask can be easily folded and stored in your carry-on luggage. | Not only that, poly satin silk allows makes these silk lucid dreaming eye shade is resistant to wrinkles and shrinking. | Unlike natural silk that needs to be handwashed and treated with care, satin silk allows these eyeshades to be machine washed. | The cover ear design enables these eye shade to comfortably hold ear plugs or headphones in place while you sleep during your long distance travel nap.