I ended up with the Kelty chuck wagon for Tica. But this was a process of elimination as my dog is extremely deep chested and only medium build. This pack has worked really well for us and she can carry 8 days of food with it with no wear marks or sores. I am not sure they make it anymore though. To be honest, really look at your dogs body type and use that to narrow down which packs will possibly fit. Then try them out on your dog. Maybe put a Tshirt on first to keep the pack clean. Good shopping!