Retractable drawbar and smooth steering The drawbar length is adjustable for personalized comfort, and the 360-degree rotating handle allows easy maneuvering at any angle, including tight spaces and crowded areas. Ventilated design for comfort and odor control Breathable windows on all sides keep air circulating and prevent stuffiness. Enhanced ventilation helps reduce odors, while zipper doors on multiple sides provide convenient entry and exit for your pet. Versatile functionality for flexible use Converts from a pet backpack to a pet trailer with a large-capacity bag. The unit can be carried by hand or over the shoulder, and quickly switches between modes to suit different activities and environments. Foldable portability for storage and transport Foldable construction enables compact storage and easy transport. Quick installation and a secure frame attachment ensure stability whether your pet is inside or not. Use scenarios City daily walks and commuting: switch between backpack mode for stairs or transit, and trailer mode for longer park strolls without letting go of your pet. Travel and errands: carry by hand or shoulder, convert to trailer for hands-free shopping, and store compactly in a car trunk or hotel room. Vet visits or outings: lightweight, ventilated design provides comfortable short trips and easy pet access.