KNOW YOUR TECH breaks down the scientific technology used in your favorite sneakers and activewear. Let’s demystify your next purchase: today’s technology is Asics Guidance Line. This innovative addition to the outsole of the brand's running models helps influence the foot to interact with the shoe along its ideal and natural line of progression.

What is it? A synthetic insert which serves as a physical separation of the midsole and outsole which decouples the tooling and helps to produce a consistent load transfer at the propulsion stage. Part of the brand's Impact Guidance System philosophy, the Guidance Line helps to ensure gait efficiency and reduce the risk of fatigue and injury.

How does it work? Guidance Line works by influencing a consistent load and motion from heel strike to toe off. Especially critical during the flat-foot to propulsion phase when braking and acceleration forces reach their peak, Guidance Line delivers gait efficiency and helps to reduce the likelihood of injury.

Notable products: Gel-Cumulus 15, Gel-Lyte33, Gel-Kayano 19

Bottom line: Asics Guidance Line helps the foot and sneakers to work in harmony, resulting in an efficient and stable ride.

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