Breathable mesh pet carrier - Color: Black - Material: Mesh - Straps: Adjustable - Zipper: Double zipper - Design: Breathable design Thank you for viewing. I bought this for my cat, but it was too small and I couldn't use it. I think it would be suitable for small dogs. It's the type used like in photo 5 [This may not be the exact item] Approximate size: Width 20cm x Height 33cm Comes with a strap to attach to a collar How about using it for walks? I will fold it for shipping, so please bid with your understanding.