The Sierra has a long spring made of carbon fiber. This provides the user with a smooth gait in all activities. The amputees can walk easily on uneven terrain also due to its split toe design as it provides excellent inversion-eversion. It has a full length heel that helps in providing a stable base of support. This allows the amputees to walk comfortably. It comes with a 36 month warranty. It is rated up to 365 lbs. The foot fall is also enabled early in the gait cycle. The product improves the confidence of the users and ensures that they walk comfortably.
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