I was taken aback when I purchased my zPacks Hexamid Twin (sadly no longer offered) in 2013 because the canopy material seemed so thin. But it lasted for a very long time, multiple thru hikes, through high winds, hail, and even under considerable snow load. Probably well over 200 nights, lost track. DCF is very strong, except it can puncture so you have to keep sharp edges of other gear away from it. I’ve been skeptical of DCF packs for this reason, plus I’m not sure I would trust the waterproof claims enough to not have a pack liner in addition anyway.
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My robic ULA packs have been great and it’s good to know that the Ultra version might have some drawbacks. The tent wore out with tiny pinholes and I retired it in 2019. Haven’t been able to do thru hiking since then and I haven’t found a new UL tent I like as much as the hexamid twin. I currently have a big Agnes copper spur ul1 but will need to get a DCF UL tent when I am again able to do multi week thru hikes.
ravi_jmt2013