Men's Karhu Fast4 Fulcrum :: The Fast3 utilizes our forward fulcrum technology to provide energy efficiency and forward momentum with maximum comfort and support. Premolded heel for a great fit combined with a blown rubber/carbon rubber outsole for best performance.
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Comments about Mens Karhu Fast4 Fulcrum Running Shoe:
Super awesome marriage of a durable, cushioning outsole with aspects of a lightweight shoe. Even for a taller, heavier runner, they are supportive enough for long training runs, yet light enough for faster workouts.
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