<https://www.ski.com.au/xf/threads/spider-chains-are-not-permitted-at-hotham.60352/>
<http://schema.org/articleBody>
"No, you're wrong. The thick yellow plastic thing is not a chain. You don't need to pull it tighter - the hook on the other end where the big red thing is does that for you (and pulls in the blue chain) - it's self-tensioning, not like your chains..."
<https://www.ski.com.au/xf/threads/spider-chains-are-not-permitted-at-hotham.60352/page-15#post-1986965>