Expandable Pet Backpack Carrier This airline-approved carrier is ideal for small to medium-sized dogs and larger cats. It combines convenience and comfort for pets and their owners during travel and walks. - Comfortable and Breathable : Designed with optimal airflow in mind, featuring a well-ventilated structure. Multiple entry points and a removable window provide enhanced visibility for your pet. The plush, Sherpa-lined bed ensures your pet can relax comfortably throughout the journey. - Spacious and Secure : The sturdy construction offers ample room for your pet to move while preventing collapses. It includes a secure strap and buckle system to keep your pet safe and to prevent escape. - Enhanced Support : The shoulder and back straps are reinforced with thick padding for comfortable carrying during long trips. Additional waist and chest buckles provide extra stability and support. - Size Compatibility : Accommodates pets weighing up to 18 lbs, with dimensions of approximately 12.5 x 10.2 x 16.3 inches (L x W x H). Suitable for various small to medium-sized pets, such as dogs, cats, and puppies. - Practical Use Cases : Perfect for trips to the vet, weekend getaways, or outdoor adventures. Its expandable design allows for easy storage when not in use. Please measure your pet (length to tail base and shoulder height from the ground) to ensure a proper fit before purchasing.