It was about 20 degrees up on the hill this past saturday. I was wearing two pairs of First Lite lightweight merino base layers, my First Lite lightweight outer layer, merino socks and uninsulated boots and was completely comfortable. I did have to throw on my First Lite synthetic down vest when we sat down to call. We hit a gobbler right off the bat but he hung up at 100 yards and would not come in any closer no matter what i tried. After two hours he was still gobbling and strutting but we gave up and moved on. That was the only bird we heard or saw that day