the JOBO spa luxury sleep mask is truly unlike any other you have ever experienced. This is because we use a natural and sustainable down alternative from the seeds of the kapok tree to fill them so they are sumptuously and lightly padded and light blocking. Washable and dryable, they have a ruched elastic band that doesn't ever pinch or tangle. Made from surplus fabric from our robe patterns and they are lined in 100% satin finish cotton for extra soothing , restful comfort.