This silky-smooth, natural eye cover from Alaska Bear shields eyes from light. Because it's hypoallergenic, it's suitable for those with sensitive skin. Made of mulberry silk, it boasts a burnished sheen and feels soft to the touch. This sleep mask helps to regulate the hormone melatonin in the body which, in turn, regulates sleep. When light is present, it can disrupt the sleep cycle, so this eye cover provides complete blackout of all light.