With the 3-in1 multifunction, the pet carrier can be a rolling carrier, handbag, and backpack. You'll be free-hand when going anywhere with your pet. With breathable mesh sides, and ample ventilation, this pack keeps your pet cool on the go with all the comfort features. 1. With Rolling Wheels, traveling with ease. 2. Excellent Ventilation And Large Space. 3. Breathable Mesh Sides.