right, that is the thick-armor vs hard-armor difference.
It also matters which Marathon because there are a lot. The Green Guard is about par for rolling losses with a Gatorskin, but the Plus (extra thick) is a real pig and the Efficiency (replaced the Supreme) is faster and lighter and not cheap
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Genesis 49:16-17
"Well, well!" said Holmes, impatiently. "A good cyclist does not need a high road. The moor is intersected with paths and the moon is at the full."