OVERVIEW

The Cloudflow is On's tempo shoe — built for the day that isn't easy and isn't race day. The Cloudflow 5 upgrades to Helion HF on top of a glass-fiber-reinforced Speedboard, with a pronounced forefoot rocker; reviewers call it firm and resilient, best the faster you run. The Cloudflow 4 keeps a lighter Helion platform and is the more forgiving of the two at slower paces. Cloudflow 5, Helion HF top layer on an 8% glass-fiber-infused nylon Speedboard, pronounced forefoot rocker. More propulsive at tempo than the Cloudflow 4, ~278 g M9.

DETAILS

Best for:

Tempo runs, fartlek workouts, progression long runs

Half-marathon and marathon pace training

Runners who want a non-carbon workout shoe

The rotation slot between daily trainer and super shoe

Specs:

Category: Tempo / uptempo daily

Drop: 6 mm

Weight: ~278 g (men's US 9)

Midsole foam: Helion HF hyper-foam (top layer) on Cloudflow 5; Helion on Cloudflow 4

Plate: Speedboard (nylon with 8% glass-fiber on Cloudflow 5)

Outsole: Rubberized CloudTec pods

Upper: Engineered mesh with race-style fit

Colourway: Alloy / Rock, White / Lime

Sizing: 7 / 7.5 / 8 / 8.5 / 9 / 9.5 / 10 / 10.5 / 11 / 11.5 / 12

MATERIALS & CARE

Designed in Zurich. Brush off dirt and debris after each run. Remove laces and insoles; hand wash uppers with cold water and mild detergent. Do not machine wash, tumble dry, bleach or dry clean. Air dry away from direct heat; CloudTec pods and Helion foam last longer when the shoe fully dries between uses. Rotate pairs where possible. Do not re-DWR yourself on road models.

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