The Megablast is what happens when ASICS pours its Metaspeed-derived superfoam — FF TURBO SQUARED, the whole midsole — into an unplated cruiser. The result is the bounciest trainer the brand makes at a startling 230 g for this much stack, with ASICSGRIP rubber underneath.
It suits you if you want superfoam energy on ordinary days: easy runs that feel springy, long runs that stay fun, pickups without changing shoes. It became one of the most talked-about trainers of the past year for exactly that reason.
It is not cheap at $225 and it is not structured — this much soft foam asks your ankles to do the stabilising, and superfoams trade service life for their bounce, which is why the lifespan here is set below a conventional max-cushion trainer's.