• But.... your current jobber is 650g, and that stuff is 135g/sqm. A bivvy is gonna need at least 4sqm all in, no? That’s 540g before you’ve added any hardware.

    Edit, though I suppose you are going to really trim it aren’t you? Limited movement and no lining I guess you could get it under 3sqm

  • Yeah that was my thought, trim it. My.current rab ascent is big, so if I make this one tight itll loose a lot.
    Weight isn't my no1 concern, pack size is.

  • Are you going to have sleep pad and sleeping bag in it? Because if so, you need to not make it too tight or you won't fit that stuff and/or you'll compress your bag too much.

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