Transport on the plane

Have 2 of them appointed as transport box in an airplane! We have Chihuahuas (2.9 kg and 2.4 kg), which definitely have enough space in your pocket. There were no problems at the airport with respect. The size of the pockets, even on the plane between the legs. Everything fit reasonably well. Our airline was AirBerlin. Although the bag exceeds the allowed dimensions somewhat, but through the easy flexible form that provides probably no problem. Had me in advance already at a good friend (stewardess) inquired.
Price / performance perfectly fine!