NIB slip BLACK CONTOUR SLEEP MASK - Silk -brand new in box -silk -sleep mask was removed out of box to showcase product during live show. Never used, but please note that the plastic was opened (see last listing photo) Protect your delicate eyelash extensions while you get your beauty sleep! The slip® contour sleep mask has been specifically designed with delicate eyelash extensions in mind*. The shape of the contour on the inside of the sleep mask has been designed to sit away from your eyelids and allow additional space for your eyelashes to sit while you get your beauty sleep.