Bought a large size carrier  for my 12lbs. Maltipoo for her first plane trip.[...].It looked well made and the carrier bottom support can be remove if needed to accomodate the allowed space under the seat.The  size is just perfect as she lay down on her tummy.I bought several wheeled carriers before and tested them out with her,but they either cheap looking,or poorly constructed!Anyway,everything was great until I started to wheeled her outside to get her familiar with the carrier.She got scared and start to claw and bite through the mesh.Eventually,she made hole and rip the mesh apart!Needless to say, I was so disappointed!!!!!!!!!!!Whoever designed this ,should have thought about incidents like this!For it's price,one would think they would want to use a strong and durable mesh!!!