I bought the medium for my dog that has a 29" chest, which is on the line between medium and large. Without having tried the large, I feel I made the eight decision. I packed it with enough food for 3-4 days, treats, bug spray, extra 16oz water, and it came up to 6-7 pounds. She handled it perfectly fine and was still zipping up over rocks and logs on Vermont's Long Trail. It is shaped very we
This review was written in the old system and had content requirements that are different than reviews written today.