The K9 Sport Sack Plus 2 Large Dog Carrier Bag is a backpack carrier designed for dogs weighing up to 40 pounds. This unit, offered in gray and black colors, is perfect for pet owners looking to travel comfortably with their furry companions. The K9 Sport Sack brand is known for its quality and durability, making this carrier a reliable choice for pet transport and travel. The Plus 2 model offers increased capacity for larger dogs, ensuring a comfortable and safe journey for your canine companion.