1.VENTILATION PROTECTION: Our pet cage is designed with allround breathable. The scratchresistant and tearresistant mesh not only prevents mosquito bites, but also ensures that your pet has an unobstructed view, creating a comfortable and travel environment for the journey 2.Structural Integrity: The interior of this portable cat cage bag is reinforced with two highstrength lightweight fiber rods. Both sides are equipped with support plates and a 3mm steel wire beam to ensure that the cage can remain stable and not easy to collapse even under rough handling 3.Roller Design: The roller design of this roller cat cage bag is ergonomic. Equipped with universal wheels at the front and fixed wheels at the back, you can fully control the direction and easily cope with various terrains 4.Comfortable and Adjustable Interior Space: This pet roller backpack is equipped with a faux sheepskin cushion. In addition, the 4mm wooden board inside can be removed for separate cleaning