The Karhu Fast 3 utilizes Karhu’s fulcrum technology to provide energy efficiency and forward momentum with maximum comfort and support. A pre-molded heel provides you with a great fit combined with a blown rubber/carbon rubber outsole for the best performance.
Upper: Open air mesh in vamp and collar supported by a tight single ply and lightweight mesh in the saddle provides increased breathability an lightweight fit with an anatomical fit around the foot. Also ensures breathability throughout the forefoot and instep while supporting the medial and lateral saddles. Tongue is anatomically shaped around the instep and features a soft touch logo top. HF welded eyelets integrated into the vamp are lightweight and durable. Mesh reinforced toe top for a lightweight, abrasion resistant durability. Reflective heel logo for increased visibility in low light conditions.
Midsole: EVA padded lasting board provides step in comfort. Precision engineered compression molded EVA midsole with tuned durometers provides you the pinnacle of ultimate forward efficiency. Firm EVA fulcrum helps you transition onto your forefoot and into your toe off more efficiently. Anatomically designed, elastic EVA forefoot insert with hourglass shape aligned to the metatarsal heads ensures support and cushioning of the met heads during the propulsion phase. Combination PU foam and molded EVA heel pad breathable insole provides excellent cushioning, moisture management and durability for a great step-in feel.
14 mm heel to toe offset.
Outsole: Combination compression molded, and blown rubber outsole with anatomic flex relief and full ground contact sole gives you increased performance traction and forefoot cushion.
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