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.*While slip™ has made all efforts to design its contour sleep mask to be suitable for eyelash extensions, slip™ acknowledges that not all lashes are the same and the contour sleep mask may not be suitable for all lengths or types of lashes. Slip™ encourages you to use your own discretion in deciding whether the contour sleep mask is suitable for you.