100 Mandala ImagesA comfortable and convenient 8.5" x 11" sizeMandala Coloring books for adults relieve stress, aid Relaxation and let melt away as you give your artistic side the center stage.. 100 Mandala ImagesA comfortable and convenient 8.5" x 11" sizeMandala Coloring books for adults relieve stress, aid Relaxation and let melt away as you give your artistic side the center stage.