Assertion: crampon's crampon | /r/HasProperty | needed for approach
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text: The beauty of the alloy crampon is of course its low weight, and is ideal for those situations where you either need to keep weight low on low technical ground (you’ll save between 400 grams to 600 grams), or when a crampon is only needed for an approach and descent, and they have proved very popular on big alpine rock climbs.