Mountainsmith.
I picked up one of your dog packs from REI a few nights ago. I had previously tried to take the cheap route and bought a $25 off-brand pack from eBay. On our first trip out our dog Perrin did his usual thing of running ahead about 50 yards to scout the trail and then doubled-back to check on us. At that point he was dragging the cheap pack by one strap because the other 3 had already broken, less than a third of a mile into the hike! At that point I knew I had to pony up and purchase a quality pack.
We field tested the Mountainsmith pack today on the Trabuco Canyon Trail in Orange County, CA, and it passed with flying colors. Perrin is an aggressive trail dog and doesn’t always stay on the path. Your pack had a great snug fit and never waivered or showed signs of shifting throughout all his off trail adventures and flat out trail-sprinting. Great pack!
Regards,
Jeff Nelson