The Cumulus 28 is the ASICS you buy to stop thinking about shoes: FF BLAST MAX foam for the landings, a FLUIDRIDE outsole for the roll-through, AHAR LO rubber at the heel for the months of it, 259 g on an 8 mm drop.
It suits you as the everyday workhorse a tier under the Nimbus — enough cushion for daily mileage and the ordinary long run, light enough that it never feels like a commitment.
It is not exciting and is not trying to be. No plate, no big bounce; if you want the lively version of an ASICS daily that is the Novablast, and if you want maximum plush that is the Nimbus. The Cumulus' job is to disappear, and it is good at it.