Muscle Flex

The Muscle Flex is designed for use in challenging mountain terrain. This extra light suspension system sits close to your body for perfect stability and freedom of movement. A lightweight aluminum frame stabilizes the upper part of the back while adapting to the torsional movement of the lower back. The frame can be shaped as needed or removed entirely. The back of pack is made of hot stamped viscoelastic foam. The anatomical stamps in the foam follow the muscle groups of the human back allowing for optimal load distribution.

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