I have not had luck with my inflatables. Guess I'm a crazy sleeper. Got a z-lite and my REI flash 45 does have two loops at the bottom but not sure if that's what they're for, or the best way to securely attach the pad down here. I guess the other option is under the brain. I will miss my inflatable fitting in the pack but better than sleeping on the cold ground because my inflatable failed in the middle of the night! what strap materials do you use? how do you attach it?