The Superblast 2 is Asics' most exciting trainer — a max-stack, plateless speed shoe that delivers a bouncy, energetic ride without the rigidity of a carbon plate. FF BLAST MAX foam provides exceptional energy return and cushioning in a surprisingly lightweight package, making the Superblast 2 equally at home on long runs and tempo days. If you want a shoe that makes every run feel a little more effortless, this is it.