"This isn't some bottom of the line carrier. It is full of nice features! It's got a nice little compartment on top for treats, a leash, or a small, slightly flat toy. It's also got a little opening on top for a seatbelt. The top also has 2 hoops on the front and back that you can use to attach an ID tag, or some sort of key chain. The door is very secure (probably wouldn't be good for someone with not very good hands as a bit of strength is needed to open the door.) Their are LOTS of air holes which is really nice. And it comes with a dish that holds food and water. The dish is made to be attached to the door. The carrier is not bulky or anything, and yet my 1-year-old male cat (who isn't small at all) fit perfectly inside the medium one, with a good amount of space to move. The only complaint I would have is that while the handle is nice and comfortable to hold, it wobbles a bit much for my comfort, but I rarely hold the carrier much by the handle. Tha latches are very secure and hold well. Overall I really like this carrier and it seems my cat does too (he walked himself inside!)"