The Baffin Bivy - 1 Person Tent by Sierra Designs is one pound and super compressible, the Baffin is a minimalist bivy for alpinists, big-wall climbers, and for use as an emergency back-up. Drizone fabric is weatherproof and breathable.
So sorry, but only 4 items are allowed for comparison, so we're comparing the first 4. I blame the gnomes and so should you.
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