The Noosa Tri 13 shoes are made for triathletes, but they are not the only ones who can wear this model. With the addition of Guidesole technology, this shoe just became lighter in weight and is now designed for every runner. The Guidesole technology of the Noosa Tri 13 shoe is based on a philosophy that aims to reduce the overall load exerted on the lower limbs by applying a curved sole design. These elements help increase running efficiency by reducing ankle movement. This technology has been proven to help runners feel fresher for longer, creating a smoother and more comfortable ride.