I have a couple of Primos pop up blinds that I use for turkey hunting and fall archery deer hunting. I left one up for our November rifle season as it was in a good spot. The second weekend of our rifle season we had heavy rain most of the day. It then started to turn to snow. I had seen several deer that afternoon so decided to hunt the pop up in the morning as well. When I got the the blind in the AM, I couldn't get into it because the zipper was frozen! Ended up gong to a ladder stand I had near by. So my question is this; is there a pop up blind on the market today that doesn't use zippers that can freeze in cold weather?