KARHU ORTIX™ Karhu introduces Ortix™ Fit providing runners with the Next Shape of Comfort. For the first time in running footwear, Karhu builds a shoe utilizing an innovative fitting method where the contoured midsole mirrors the most common arch shapes to gently support the foot.
Factories have long dictated arch-less soles for mass production; however, this was never a construction consumers asked for. Karhu Ortix™ Fit features a three dimensional midsole to provide a superior fit under the foot.
Development & Prototyping
Hand crafting the midsole and developing a sole set took over a year through trial and error. Ultimately, Karhu found the ideal shape after dozens of rounds of testing. The result is a fit that supports the arch while releasing pressure at the heel and forefoot.
The TRIAD Cushioning design functions under the heel and at the first and fifth metatarsals to provide a soft landing and cushioned take off at common pressure points.
The Synchron Ortix™ is the first shoe in the collection to receive the Next Shape of Comfort. Designed for the runner or walker seeking comfort and plush ride, the Synchron Ortix™ features a full-length Fulcrum™ unit to create a smooth ride through the gait cycle.
The shoe features a 3D pressed tongue and booty construction for a sock-like fit around the foot, and seamless overlays in the forefoot to eliminate irritation at the toes.

Weighing in at 330g / 11.6 oz (men’s size 10) and with a heel to forefoot offset of 28mm / 16mm, this comfortable trainer is the go-to shoe for recreational runners seeking balanced cushioning with increased support.

About Karhu
KARHU, meaning “bear” in Finnish, is a leading running brand in Europe and has provided technical running and outdoor gear for 100 years. With an authentic heritage in running and a deep connection to the outdoors, KARHU follows the Finnish principles of design simplicity and running purity. KARHU shoes have been worn on the feet of some of the greatest Finnish runners, including Boston Marathon champion Olavi Suomalainen and Paavo Nurmi, giving rise to the Flying Finns. KARHU shoes and apparel are sold globally at running and lifestyle specialty retailers. For more information, visit Karhu.com.