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. Sewn from a durable canvas-like exterior with a soft lining and made to order, in three sizes up to one that fits a tablet. A catchall for toiletries, art supplies, or small electronics, carrying an independent artist's work instead of a plain zip bag.