Thank you for viewing. This item was given to me, and while it shows some signs of use and minor soiling, it's still a perfectly usable bag. There's a mesh panel for air circulation on one side of the bag. It has a net on top to prevent pets from escaping. It seems suitable for both dogs and cats. It's a carrier bag that can be carried by hand. Size: Height: 28 cm Width: 51 cm Depth: 20 cm A board is inserted in the bottom. It's a used item and has some minor stains. I've included photos. Thank you for your understanding.