Emer­gency rope re­leaser

Popular Science - - BEST OF WHAT’S NEW 2017 -

A se­ries of sewn loops made of strong, light­weight fiber grip a rope tightly when they are weighted but re­lax when they are not. So when you’re done rap­pelling down a face, tug sev­eral times to lib­er­ate your line from its an­chor up top. An­other plus: If you’re in a tight spot, you can de­scend a sin­gle rope length in­stead of a dou­bled-up one, mean­ing you can cover twice the ver­ti­cal dis­tance.

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