This fit my 32oz Owala bottle snuggly and was great for walking around town and carrying around the airport on my recent trip. I don’t have a dog so I used the pocket for change and it works great! I love the woods design and got the matching airpods case. Even with the water carrier on it still fit into the side of my backpack and was snug enough that it didn’t come off if I pulled the bottle out. The carrier is such a snug fit I didn’t think the rope tie thing was necessary but I imagine it means you could put smaller bottles too. If you like carrying small purses or your things in your pockets but want to be hands free and still carry your water bottle I highly recommend this!