OneTigris Mammoth Dog Backpack 2.0 Version Tear Camping Hiking Dog Backpack for M/L Size Dogs (M, Oliver)OneTigris MAMMOTH Dog Pack (Upgraded Version): Durable 1000D nylon with mesh lining for breathability to maximize function and comfort on lengthier outings Larger Storage Room: 3L pouch with two 2" by 7" loop panels on either side for carrying water, dog food, treats, toys; Each side pouch comes with an exterior horizontal umbrella pocket with cross bungee cords for strapping on extra gear Hidden Zippers Design: To prevent the dog's hair from getting