Outward Hound DayPak Dog Saddleback Backpack, Blue, Large

The pack is very easy to put on the dog - once it's adjusted to the dog, it slips on in 10 to 15 seconds. Once the dog understands that the pack means a walk, they step up and step in willingly. Two clicks and you're on your way. This was my third Outward Hound day pack. My previous one, identical to this one, lasted ~5 years. I walk my three dogs 6 days a week for a total of about 325 days a year, averaging 1.1 miles per walk. That would be nearly 1,800 miles over the life of the pack. In my case, the wearer is a 45 lb. Sato dog. The point of failure that made the replacement necessary was the zipper pull. But that zipper got used at least twice every walk.