Stacking blocks in order to accommodate taller or less flexible yogis can be a precarious propostion. That's why we developed The Big Blue, an over-sized block made out of the same lightweight, super-dense foam as our regular-sized blocks. The Big Blue stands a foot tall, with a generous 6 and 3/4 inch width, and 5 inchdepth for extra stability. This block is ideal for use in standing poses, as well as in supported poses.