We all love the packs. Gypsy loves to pack every step of the hike. Burt takes refuge in the pack after about a mile. After a good rest he is ready to hike again. They are easy on the back and have a water bottle holder to free up our hands. Gypsy is a little short for the pack so we fold up a flat sheet and place it in the bottom of the pack. This gives her a little boost and then we have a picnic blanket handy! These packs take our hiking to the next level as our short legged pups can sure slow us down. And carrying them in the crook of our arm, is well, not at all comfortable after about 30 seconds. We are extremely pleased with our purchase!