Don't own one and have never seen one before now. Years ago I started carrying an old inexpensive sleeping bag with me. It's one that packs pretty small and I just carry it in attached to my stand. I do basicly the same thing with it. I can stand, turn, or move around pretty easy. It keeps me in the stand long after everyone else has called it a day. If it's really cold, I just drop 1 or 2 heat packs down in the bag and I'm good to go. I've taken many a deer while wrapped up in my stand. It works and you've probably got an old bag laying around already.