John M.wrote a review of Big Agnes Copper Spur HV UL Series Footprint on July 17, 2017
Familiarity: I returned this product before using it
If the reality of the construction actually requires an extra sheet of material to protect the floor, what didn't they just make the floor thicker to begin with. I slightly thicker piece built in is probably lighter than adding a separate stand alone membrane. Cheaper to manufacture - and less frustrating to the buyer who has to buy this at nearly 20% of the cost of the total tent.