There are two Poron cushion inserts, the blue and red areas in the photo, that are really ant-shock platforms and provide shock-absorption during the foot stride which goes a long way to cut down foot fatigue especially climbing in rocky areas.
By Mike Doyle, About.com Guide
There are two Poron cushion inserts, the blue and red areas in the photo, that are really ant-shock platforms and provide shock-absorption during the foot stride which goes a long way to cut down foot fatigue especially climbing in rocky areas.
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