NOTE: this is the old signup for D4 Portaledges, the new paradigm in remote big wall stormproof hanging bivouac technology developed from 2017-2021.  As I am no longer manufacturing portaledges as of 2022 (except for select remote big wall expeditions), the only list maintained is the one for my history writings at  Please go there if interested in climbing history

This sign-up no longer maintained.
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