This versatile pet backpack carrier is the perfect companion for your furry friend's adventures. With dimensions of 12.6 inches long, 11.4 inches wide, and 16.5 inches high, it can comfortably accommodate dogs up to 15 pounds or cats up to 18 pounds. The well-ventilated design features three PVC mesh sides, ensuring optimal airflow and allowing you to check on your pet easily. The backpack is designed to fit pets up to 14.5 inches in overall height and 12 inches wide, making it suitable for most small and medium-sized pets, including cats, small dogs, rabbits, guinea pigs, cockatiels, hamsters, and even birds or fish in appropriate carriers. Whether you're taking your furry companion on a hike, a trip, or just running errands, this pet backpack offers a convenient and comfortable way to keep them close while allowing them to enjoy the journey with you.