Why own a K9 Sport Sack Dog Carrier? The K9 Sport Sack Dog and pet carrier backpack was created so we never had to leave our dog behind ever again! We want to be able to take our dogs where ever and when ever! K9 Sport Sack was created by dog owners, for dogs and owners - to explore, travel, have fun, and grow closer all while being safe, comfortable and easy. Meet the KNAVIGATE. We designed and created the K9 Sport Sack KNAVIGATE based off customer feedback from thousands of loyal customers. The KNAVIGATE was meticulously developed to be lightweight, have extra storage, ventilation and comfort for you and your dog. We're so excited to bring you the newest model for 2021. The KNAVIGATE is an airline friendly pet carrier. It’s super safe for your pup, comfortable for you, built to last, and will turn heads! K9 Sport Sack KNAVIGATE Features: - Sizing from XS - XL - Fully ventilated sides for maximum air flow - Padded back side for comfort - Storage Pocket extending underneath the pet base to bottom of frame - Dog lumbar support straps - Strong 20mm thick bottom rest pad to keep your dog comfortable - Safety carabiner for collar hook-up - Dual side pockets - Upgraded easy pull SBS zipper - K9 Whistle Clip on light reflecting sternum strap - Velcro soft side for custom name tags, safety lights etc.