I bought this carrier for my cat because he is not a fan of the hard sided carriers. While there is not enough room for him to stand up in the bag... it is tall enough for him to sit and he seems very comfortable being curled up in the bottom. I do not like that the primary support for the bottom is a piece of cardboard- if the cat ever has an "accident" you will have to replace it...it would not be difficult to replace with another piece that you cut - its just a convenience factor. The cushion on the bottom of the bag seems very comfortable and can be taken out and washed which is good because it collects a lot of cat hair. The biggest concern I have with this bag is that the sides are very thick and the cushion seems very "warm." While this is great if you have to take him out in the colder months - it is not the best in the hot summer days. The carrier seems relatively sturdy and my cat can't get out - which is great because he has been known to be an escape artist. Overall, I would recommend this to others for its ease of carrying (hands free!) and comfortable strap. I would just say to be sure that you do not use it in extreme heat.