Asics Gel-Cumulus 27 vs Asics Gel-Cumulus 28:
Which to Choose

Geometry-wise these two are near twins: both are neutral, plate-free, spec'd at an 8mm drop, and share the same best distances and roughly the same comfortable pace window (about 5:15–6:15 min/km, with the ceiling around 5:00 before the soft foam goes vague). Weight is essentially a wash — both sit in the mid-260s-to-mid-270s gram range for a men's pair, close enough that you won't feel a difference underfoot. The single meaningful change is the midsole. The 27 uses FF Blast+ ECO, an EVA-and-olefin blend that lands soft and forgiving but rebounds slowly, so it rolls along calmly on easy days and feels flat when you push. The 28 swaps in FF Blast Max, a supercritical foam that keeps the same plush, deep, impact-absorbing character but adds noticeably more life and spring to each step — it's the livelier of the two without ever becoming a snappy tempo shoe. The 28 also sits marginally taller in the heel and firms up its outsole, adding harder AHAR rubber in the high-wear zones where the 27 leaned more on foam, which improves grip and longevity. In short: same platform, same use case, a more energetic and slightly more durable ride on the newer model.