From what I understand, they're using .34 oz DCF for the fly and .51 oz for the bathtub......seems pretty sketchy to use this on a thru anything longer than a weekend as that's pretty thin material, even for DCF on parts of the shelter that can take a beating. Pretty steep costs at $800+, prob going to stick with cottage stuff till they prove worthy and come down in price a bit. Interesting they're bring DCF to bigbox stores though.