The lovely lashes contour mask is designed to protect your delicate lashes. The shape of the contour on the inside of the mask has been designed to sit away from your eyelids and allow additional space for your eyelashes to sit. SLIP acknowledges that not all lashes are the same and the contour mask may not be suitable for all lengths or types of lashes. SLIP encourages you to use your own discretion in deciding whether the sleep mask is suitable for you. SLIP silk was also shown to create 43% less friction on average, which can reduce stretching and tugging on delicate facial skin. On average compared to cotton pillowcases with a 220-360 thread count. Includes: 1 x Black contour sleep mask (3.8" x 8.4" / 9.5 cm x 21.2 cm).