Very good! Spacious with mesh all around so my dog (toy poodle - 2.5 kg) has visual contact from everywhere. The only 'negative' thing I can say is that it has a cardboard wrapped in fabric at the bottom. It has a mesh window on top that opens with a zipper and takes out his head and both sides open with zippers again for entering and exiting. It has a waist belt and an integrated strap/leash for more safety. Only time will tell about durability.