As I've aged, I find myself carrying less "stuff" into the woods with me. I've been carrying a haversack on most hunts for the past several years and it has served me very well. Once the weather turns cold, I prefer to carry my heavy vest, hat and fleece neck gaiter in with me to keep from over-heating (fat old bald guys sweat easily). I am definitely going to purchase one of these new sling packs. Too many times, I've reached my stand going in or my truck when I leave, only to find I've dropped one my cold weather items somewhere along the trail. I believe the sling pack will cure that issue.