Good morning Griffski, I have Charlie who's 3 kg and Echo who's 2 and a half kgs. Then I have Heather 2.8 kgs and Rosie 2 kgs. I pop these two pairs in a large wire carrier with towel and fleece. I give them plenty of room as sometimes it takes me an hour to get to the vet. If you don't mind a little bit of a squash two would probably fit in the cabrio. I've used it for one in an emergency, like when Heather pulled a claw out and we had to go to OOH vet and then she had loads of room to herself. Lovely and high inside and so easy to clean. I have several carriers, all different sizes and opening styles. Wish they did the Cabrio bigger, then I'd get one in the bigger size.