It just big enough for my 9.6 lb. I purchased the brown and pink carrier as a replacement, because the straps on the legacy print cannot be replaced. It is likely old stock, but the sherpa backpack is the best pet carrier that has been on the market. - Patented spring wire frame allows the rear end of the carrier to be pushed down several inches - Mesh windows for ventilation, top and side entry with locking zippers for safety Sherpa Forma Frame Airline Approved Crash Tested Pet Carrier, Black, X-Large, Forma Frame Airline Approved, Crash Tested Pet Carrier, Black, X Large 4.6 out of 5 stars 16 $128.53 $ 128 . 53 Sherpa™ is the carrier source for pets on the go! This exceptional brand features a collection of comfortable, durable soft pet carriers. dog who is slightly long. From our best-selling Original Deluxe Sherpa pet carrier to our exclusive Delta and American Airlines pet carriers - we have pet carriers for every breed of small dog … Sherpa Airline Approved Travel Backpack Pet Carrier is perfect for traveling in style and comfort by plane or car, for an adventure or just a trip to the vet. My legacy print backpack was purchased 10 years ago.