A classic checkerboard pattern of alternating black and white squares appears to ripple and undulate across the composition, as if the flat grid has been bent and warped by an invisible force. The optical distortion creates a hypnotic, three-dimensional effect that challenges the eye's perception of what should be rigid geometry. Constructed from woven polyester with a soft microfiber lining and a sturdy zipper, made to order for 13 and 15 inch laptops. Everyday protection carrying an independent artist's work, not another plain black sleeve.