I received this pad along with another brand that I was considering. Between the 2 pads it is a unanimous win by the other brand. I'll try to stick to just reviewing the Big Agnes pad though.
-It has a high R-value at a low weight
-It comes with a patch kit
-Features old school twist lock valve
-Hard to fully inflate
-21 breaths to inflate (You'll be lightheaded)
-Pad is only 18.5 inches wide, not 20 inches wide
-Weighs 490 grams, not 450 grams
-Slippery and crinkly fabric
-Takes 5 minutes to deflate after you roll it up twice to get all of the air out of it.
This will be my last attempt at buying a Big Agnes Product. The most troubling issue is the width. 18.5 inches makes you feel as if you will slide right off of this thing. Your arms dangle over the sides. Almost all of my other sleeping pads are 20 inches wide and you will notice immediately that this one is not. I confirmed this with a tape measure. Also the old twist valves are obsolete. They are much harder to inflate due to less air flow. Once you are close to full volume you have to somehow hold air pressure while you turn the valve and try not to let any air escape. There is no reason for any pad to keep using twist lock valves. The flat valves featured on many other pads are easier to inflate and deflate. I have zero confidence that this pad would give me a good night sleep.
I included a note with my return to Backcountry in hopes that they update the product information so as not to mislead and disappoint more customers. If you're looking for an amazing pad that takes 9 breaths to inflate, 35 seconds to deflate and pack, weighs 15 oz with an R-Value of 3.7, I would suggest the R.E.I. Flash Insulated Mummy Pad.
Don't buy this pad, you'll end up returning it.