If the Harrier from 1997 were introduced today runners would… actually think it was a pretty darn good shoe. It has the same basic profile we see today, same upper materials, and a tread that maybe ought to be revisited, or at the very least reexamined. Ah, nostalgia - it isn’t always as wistful as one might think. At least in recent memory, many of the shoes are as good as what we have today.
The new Flow bears a resemblance to its sibling (and the fastest shoe in Karhu’s lineup) the Racer Fulcrum_ride. The Flow’s upper is two types of open mesh: one at the tongue, forefoot, ankle collar, and heel; the other as a supportive saddle-like layer in the midfoot that’s further braced by the welded logo stripe.