I'm selling this because I accidentally bought a duplicate. It's a backpack, so it's convenient for vet visits. 3-in-1 pet carrier bag with expandable three-sided curtains and a lockable zipper, perfect for travel and vet visits. - Brand: Tresbro - Color: Dark Gray - Type: 3-in-1 Pet Carrier Bag - Function: Travel / Vet Visits / Evacuation - Features: Expandable / Three-sided curtains / Lockable zipper Although listed under dog supplies, cats can use it too!