Karhu Flow Trainer III

KarhuFlow e1708887070418

The Flow Trainer III bears little resemblance to its namesake, but it’s now better equipped to fulfill its destiny as a snappy Performance training shoe. The upper is a two-layer open mesh that breathes well. It has minimal structure (just a heel counter and toe cap with a hint of support in the saddle), but it secures the foot well and keeps everything lined up over the midsole. The midsole’s responsive foam is low profile— an 8-millimeter drop from heel to toe, with only 16 millimeters under the heel—but with the efficiency of the geometry, there’s noticeable cushioning under the foot. The outersole has carbon rubber over only two-thirds of the surface at the heel and under the forefoot, but it provides both good traction and durability. The bottom line? The Flow Trainer III is a shoe that whippets can wear every day, and the rest of us should have in the arsenal for speedier runs or races and just to mix up the training schedule.

Performance running

Price: $115 Sizes: Men 8–13; Women 6–11 Weight: 6.9 oz. (men’s size 11); 5.1 oz. (women’s size 8) Upper: air mesh, synthetic overlays, reflective accents Midsole: CM-EVA Outersole: arbon rubber heel, blown rubber forefoot Innersole: CM-EVA Shape: semi-curved Construction: Stobel slip-lasted Recommended for: medium- to high-arched feet with neutral biomechanics