When I first started hammock camping, The Terminator and I used 25+ inch wide pads from WallyWorld. The Terminator had condensation issues but I did not. I did try using a FL pad at 18 degrees but I got too cold and had to bail. Luckily I was in my back yard so I could escape to my house. I tried an inflatable pad and while it worked, it was not as comfortable as the pad. We have since gone to UQs which we find much more comfortable to use.