Kiko is our Shetland Sheepdog puppy. We wanted to go hiking/birding with him, but knew he couldn't go all the way with us yet. So we researched and bought the small K9 Sport Sack Trainer. It was a bit of a challenge getting a squirmy puppy in it at first, but we figured it out and tried it around the house and yard first, so he could get used to it. We took our first long hike today and he did great. I highly recommend it!