The Air Forward Facing Dog Backpack is a great place to start for your first pet-carrying adventure. This classic model is the most flexible, breathable and lightweight pet carrier in K9 Sport Sack's catalog; perfect for shorter hikes, bike rides and any other quick trip or outing you can dream up. Like all K9 Sport Sack models, it was designed under the close direction of veterinarians, dog trainers and outdoor product engineers to be ergonomic, safe and strong. With a sternum strap, ventilated cooling side panels and ventilated shoulder straps, you and your pooch will be walking in comfort. 30 LB/13 KG weight limit.